OpenAI Provider for Trados Studio problem when performing pre-translate batch task

Dear all, I upgraded the connetor to 1.1.7.1  - I'm not able to install 1.2.4.0 on my Trados version.

The open AI connector with the API key works fine.

When performing the batch task 'Pre-translate Files with OpenAI provider for Trados', I get following error:

How to solve this?

Many thanks!

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