You're very welcome, thank you again for the great support. :)) I followed the instructions of the clearml-serving README on github None . There is one section called 'Optional: advanced setup - S3/GS/Azure access'. Maybe the syntax could be added there? I also saw the additonal link to configure the storage access, but this site focuses on setting up the clearml.conf and I was not sure how and if I could transfer it to the docker .env-file.
Also, of course, it would be great to get more hints about the cause in the error message itself. But since I'm not technically into the serving services, for sure I don't know to what extent this would be possible.