without performance data we should not show ERROR

[ReimarBauer]

The placeholder for performance_settings needs a different impementation

ERROR: Failed to serialize performance_settings: 'str' object does not support item assignment

[Delta17920]

@ReimarBauer Have a look!!

[ReimarBauer]

@Delta17920 next time please ask for assignment first ;) I can only assign, when a message was written in the issue.

[Delta17920]

Ok

[Delta17920]

@ReimarBauer have a look #2948