# Tensorflow error with BERT model selector **URL:** \ **Category:** Partner Extensions\ **Tags:** redfield\ **Created:** [May 7, 2021, 5:41pm UTC](https://forum.knime.com/t/tensorflow-error-with-bert-model-selector/32802 "2021-05-07T17:41:26Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![bwakaruk](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/b/ecd19e/32.png) [@bwakaruk](https://forum.knime.com/u/bwakaruk)\ **Post date:** [May 7, 2021, 5:41pm UTC](https://forum.knime.com/t/tensorflow-error-with-bert-model-selector/32802/1 "2021-05-07T17:41:26Z")
Hello, I am have created a fresh Python 3 conda environment to use with Knime on Windows 10. When I try to execute the BERT Model Selector, it fails with the error “cannot import name ‘parameter\_server\_strategy\_v2’ from ‘tensorflow.python.distribute’” see screenshot below. ![image](https://forum-cdn.knime.com/uploads/default/original/3X/1/e/1ed87094658f93ab6431b95c7696537a3166cee3.png) I’ve checked the packages required in the BERT Knime Hub article and all are installed at equal or higher version (for example tensorflow-hub is 0.12). Any idea why I would be getting this error? Regards, Ben ---
**Author:** ![bwakaruk](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/b/ecd19e/32.png) [@bwakaruk](https://forum.knime.com/u/bwakaruk)\ **Post date:** [May 7, 2021, 8:24pm UTC](https://forum.knime.com/t/tensorflow-error-with-bert-model-selector/32802/2 "2021-05-07T20:24:46Z")
Managed to resolve the issue - tensorflow estimator was version 2.4 - needed to downgrade to 2.3. ---
**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\ **Post date:** [May 14, 2021, 8:25pm UTC](https://forum.knime.com/t/tensorflow-error-with-bert-model-selector/32802/3 "2021-05-14T20:25:21Z")
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