'no ui' error with Ray in SageMaker RL

My customer has met the issue 'no ui' when using Ray, and sometimes it didn't. It seems to be due to not using proper version of Ray and launcher files, can you redirect us to which latest version of Ray and launcher files are recommended to avoid the error message 'no ui'?

Start by locating the SageMaker RL examples and their Ray launcher files, then compare the versions used against the current recommended versions. Reproduce the “no ui” message if possible and document the compatible Ray and launcher versions; done means users have clear guidance to avoid the error.

Written by the indexing model from the issue text.