Execute failed: EndVector() takes 1 positional argument but 2 were given

[azsb1g19]

I have a simple workflow:

python-bugged-example.knwf (7.7 KB)

Where the first node fails to execute:

This fails with error: Execute failed: EndVector() takes 1 positional argument but 2 were given

There is a post with the same error, however I’m not doing any ML so I don’t think it’s relevant to me.

Help with error: Execute failed: EndVector() takes 1 positional argument but 2 were given

I keep getting the following error when running the BERT classification learner or the KERAS network learner in the KNIME platform: “Execute failed: EndVector() takes 1 positional argument but 2 were given” Please guide me as to how I can fix this issue. Thanks in advance! Hope to

[MarcelW]

Hi @azsb1g19,

What Python environment do you use? One created via the KNIME Python preferences (File > Preferences > KNIME > Python)?

I believe the post you linked should apply to you also. Try downgrading the version of the flatbuffers package in your environment to a version below 2.0.0.

Marcel

[azsb1g19]

Yep, activating the conda venv for KNIME and running:

pip uninstall flatbuffers

Followed by:

pip install flatbuffers==1.12

Did the trick!