Only allow sessions to be created if the function group exists

[elsapolo]

Prerequisites

• I checked the documentation and made sure this feature does not already exist
• I checked the existing issues to make sure this feature has not already been requested

Feature

Right now it is possible to create sessions (through API or SDK) even though the function group provided might not exist. It only causes an issue when starting the session, making it difficult to identify what is causing the error.
If the error was in the creating session response it would be easier to debug

Additional Information (Optional)

No response

[qati]

Hi @elsapolo ,

Thank you for your feedback. We will roll out a fix for this soon.