# KNIME Labs: Troubles with some 'Items' - e.g. 'KNIME AI Extension' - on Mac

**URL:** <https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483>\
**Category:** KNIME Extensions\
**Tags:** bug, other-knime-extensions\
**Created:** [April 4, 2025, 8:23am UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483 "2025-04-04T08:23:16Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![Erich\_Gstrein](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/e/977dab/32.png) [@Erich\_Gstrein](https://forum.knime.com/u/Erich_Gstrein)\
**Post date:** [April 4, 2025, 8:23am UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/1 "2025-04-04T08:23:16Z")

</div>

Hi,  
I’m running Knime 5.4.3 - with all Extensions - on a MacBook (M3). After upgrading to a newer OS - macOS Sequoia v15.4 - I noticed a series of Warnings/Errors (see below) at start-up and could not find the ‘AI’ package in the ‘KNIME Labs’ anymore.  
So I decided to go for a fresh installation of KNIME 5.4.3 and the base istallation (without extension) showed no Warnings/Errors in the Console at start-up. Installing the complete ‘KNIME Labs Extension’ worked (no errors during installation) - but at start-up, the Warnings/Errors showed up again (see below, the first lines of the log)!  
Is there any known Problem with this OS Version for Mac?  
Thx!  
Erich

```auto
Log file is located at: /Users/sngwa/sWork/knime-workspace/.metadata/knime/knime.log
INFO KNIMECorePlugin Setting console view log level to INFO
ERROR WelcomeAPEndpoint Calling welcome page endpoint failed:PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
WARN DefaultPythonGateway Python standard output: 
WARN DefaultPythonGateway Python standard error: Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/ __init__.py", line 24, in <module>
    from . import multiarray
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/multiarray.py", line 10, in <module>
    from . import overrides
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/overrides.py", line 8, in <module>
    from numpy.core._multiarray_umath import (
ImportError: dlopen(/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Library not loaded: @rpath/libgfortran.5.dylib
  Referenced from: <D37BED4E-7F75-3467-A281-7E7E316989C9> /Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libopenblas.0.dylib
  Reason: tried: '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __init__.py", line 130, in <module>
    from numpy. __config__ import show as show_config
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __config__.py", line 4, in <module>
    from numpy.core._multiarray_umath import (
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/ __init__.py", line 50, in <module>
    raise ImportError(msg)
ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: Python3.11 from "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/python"
  * The NumPy version is: "1.26.4"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: dlopen(/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Library not loaded: @rpath/libgfortran.5.dylib
  Referenced from: <D37BED4E-7F75-3467-A281-7E7E316989C9> /Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libopenblas.0.dylib
  Reason: tried: '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python3.nodes_5.4.1.v202501291500/src/main/python/_node_backend_launcher.py", line 62, in <module>
    import knime._arrow._table as kat
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python3.arrow_5.4.0.v202411121140/src/main/python/knime/_arrow/_table.py", line 52, in <module>
    import pyarrow as pa
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/pyarrow/ __init__.py", line 65, in <module>
    import pyarrow.lib as _lib
  File "pyarrow/lib.pyx", line 24, in init pyarrow.lib
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __init__.py", line 135, in <module>
    raise ImportError(msg) from e
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python interpreter from there.

WARN DefaultPythonGateway Python standard output: 
WARN DefaultPythonGateway Python standard error: Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/ __init__.py", line 24, in <module>
    from . import multiarray
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/multiarray.py", line 10, in <module>
    from . import overrides
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/overrides.py", line 8, in <module>
    from numpy.core._multiarray_umath import (
ImportError: dlopen(/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Library not loaded: @rpath/libgfortran.5.dylib
  Referenced from: <D37BED4E-7F75-3467-A281-7E7E316989C9> /Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libopenblas.0.dylib
  Reason: tried: '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __init__.py", line 130, in <module>
    from numpy. __config__ import show as show_config
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __config__.py", line 4, in <module>
    from numpy.core._multiarray_umath import (
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/ __init__.py", line 50, in <module>
    raise ImportError(msg)
ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: Python3.11 from "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/python"
  * The NumPy version is: "1.26.4"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: dlopen(/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Library not loaded: @rpath/libgfortran.5.dylib
  Referenced from: <D37BED4E-7F75-3467-A281-7E7E316989C9> /Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libopenblas.0.dylib
  Reason: tried: '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python3.nodes_5.4.1.v202501291500/src/main/python/_node_backend_launcher.py", line 62, in <module>
    import knime._arrow._table as kat
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python3.arrow_5.4.0.v202411121140/src/main/python/knime/_arrow/_table.py", line 52, in <module>
    import pyarrow as pa
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/pyarrow/ __init__.py", line 65, in <module>
    import pyarrow.lib as _lib
  File "pyarrow/lib.pyx", line 24, in init pyarrow.lib
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __init__.py", line 135, in <module>
    raise ImportError(msg) from e
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python interpreter from there.

WARN DefaultPythonGateway Python standard output: 
WARN DefaultPythonGateway Python standard error: Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/ __init__.py", line 24, in <module>
    from . import multiarray
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/multiarray.py", line 10, in <module>
    from . import overrides
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/overrides.py", line 8, in <module>
    from numpy.core._multiarray_umath import (
ImportError: dlopen(/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Library not loaded: @rpath/libgfortran.5.dylib
  Referenced from: <D37BED4E-7F75-3467-A281-7E7E316989C9> /Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libopenblas.0.dylib
  Reason: tried: '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __init__.py", line 130, in <module>
    from numpy. __config__ import show as show_config
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __config__.py", line 4, in <module>
    from numpy.core._multiarray_umath import (
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/ __init__.py", line 50, in <module>
    raise ImportError(msg)
ImportError: 

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: Python3.11 from "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/python"
  * The NumPy version is: "1.26.4"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: dlopen(/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Library not loaded: @rpath/libgfortran.5.dylib
  Referenced from: <D37BED4E-7F75-3467-A281-7E7E316989C9> /Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libopenblas.0.dylib
  Reason: tried: '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/core/../../../../libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/bin/../lib/libgfortran.5.dylib' (duplicate LC_RPATH '@loader_path'), '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python3.nodes_5.4.1.v202501291500/src/main/python/_node_backend_launcher.py", line 62, in <module>
    import knime._arrow._table as kat
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python3.arrow_5.4.0.v202411121140/src/main/python/knime/_arrow/_table.py", line 52, in <module>
    import pyarrow as pa
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/pyarrow/ __init__.py", line 65, in <module>
    import pyarrow.lib as _lib
  File "pyarrow/lib.pyx", line 24, in init pyarrow.lib
  File "/Applications/KNIME 5.4.3.app/Contents/Eclipse/bundling/envs/org_knime_python_llm/lib/python3.11/site-packages/numpy/ __init__.py", line 135, in <module>
    raise ImportError(msg) from e
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python interpreter from there.

ERROR PurePythonNodeSetFactory Failed to parse Python node extension at path '/Applications/KNIME 5.4.3.app/Contents/Eclipse/plugins/org.knime.python.llm_5.4.3.v202503051153/src/main/python'. Could not connect to the Python process.
WARN DefaultPythonGateway Python standard output: 
WARN DefaultPythonGateway Python standard error: Traceback (most recent call last):

```

1. List item

---

<div class="post-metadata">

**Author:** ![BenceKeseru](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/b/839c29/32.png) [@BenceKeseru](https://forum.knime.com/u/BenceKeseru)\
**Post date:** [April 4, 2025, 1:06pm UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/2 "2025-04-04T13:06:05Z")

</div>

Hi,

It looks like you’re encountering some known problems related to macOS Sequoia (v15.4). We’ve seen similar reports from other users who have updated to this macOS version.

Based on information from GitHub and other users this is a general issue with that OS version - [Numpy import error when using conda-forge build of numpy 2.2.3 // no issue with pip · Issue #347 · conda-forge/numpy-feedstock · GitHub](https://github.com/conda-forge/numpy-feedstock/issues/347#issuecomment-2773377683)

Currently on that thread the recommendation is not updating to 15.4 yet.

Kind regards,

---

<div class="post-metadata">

**Author:** ![Erich\_Gstrein](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/e/977dab/32.png) [@Erich\_Gstrein](https://forum.knime.com/u/Erich_Gstrein)\
**Post date:** [April 4, 2025, 2:22pm UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/3 "2025-04-04T14:22:05Z")

</div>

Thanks for the quick response! As this Mac is a company PC, I have to follow the security guide-lines, demanding this update!

---

<div class="post-metadata">

**Author:** ![BenceKeseru](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/b/839c29/32.png) [@BenceKeseru](https://forum.knime.com/u/BenceKeseru)\
**Post date:** [April 9, 2025, 2:24pm UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/4 "2025-04-09T14:24:08Z")

</div>

Hi, If you check that thread, there is a recommended workaround. Our engineering team has been working on a fix for now.

I just tested it locally on my end, and after running the script, I was able to use the nodes in KAP again. Would you be open to helping us test this workaround on your side?

Please let me know!

---

<div class="post-metadata">

**Author:** ![BenceKeseru](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/b/839c29/32.png) [@BenceKeseru](https://forum.knime.com/u/BenceKeseru)\
**Post date:** [April 10, 2025, 12:06pm UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/5 "2025-04-10T12:06:05Z")

</div>

Official forum post about the issue with a workaround explained:

> [@Known macOS 15.4 Issue with KNIME’s Bundled Python Environments](https://forum.knime.com/t/known-macos-15-4-issue-with-knime-s-bundled-python-environments/87584):
>
> Dear KNIME Community, We want to inform you of a known issue affecting the bundled Python environments in KNIME Analytics Platform on macOS 15.4. Root Cause Some Conda libraries—particularly libgfortran (used by numpy)—contain duplicate RPATH entries, causing them to fail to load on macOS 15.4. This is not limited to KNIME; it stems from a known problem in the numpy conda-forge feedstock ([https://github.com/conda-forge/numpy-feedstock/issues/347](https://github.com/conda-forge/numpy-feedstock/issues/347)), and a permanent fix is not yet available. In…

---

<div class="post-metadata">

**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\
**Post date:** [April 17, 2025, 12:06pm UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/6 "2025-04-17T12:06:36Z")

</div>

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.

---

<div class="post-metadata">

**Author:** ![forum](https://forum-cdn.knime.com/user_avatar/forum.knime.com/forum/32/77398_2.png) [@forum](https://forum.knime.com/u/forum)\
**Post date:** [June 15, 2025, 9:32am UTC](https://forum.knime.com/t/knime-labs-troubles-with-some-items-e-g-knime-ai-extension-on-mac/87483/7 "2025-06-15T09:32:05Z")

</div>

**Internal ticket ID:** AP-24214  
**Summary:** Bundled Python Conda environments do not work on MacOS 15.4  
**Fix version(s):** 5.4.4, 5.5.0  
**Other related topic(s):**

> [@Execution failed: Could not connect to the Python process.](https://forum.knime.com/t/87572):
>
> Hello all! I am trying to run a script that calculates the centered log ratio. What makes my situation potentially different, from past questions on the same topic is that the Python Scrip Node used to work flawlessly with the same script. But now as the screenshot shows, the Python Node fails to work. Im not sure what is different now than in the past. I do have installed the basic Python extension. Here is the flow variables which I have not changed. . . . [image] By training I …

> [@Can't install KNIME AI Extension](https://forum.knime.com/t/87566):
>
> Hi,Knimer When re-install knime 5.4.3, the local GPT4ALL node was missing. After uninstall KNIME AI Extension, then re-install AI Extension again. It still can’t solve this issue. How to fix it? Cannot complete the request. See the error log for details. "KNIME AI Extension" will be ignored because it is already installed.```