[X] If relevant, manual tests have been done to ensure the stability of the whole application and that the involved feature works
[X] Automated tests covering the feature or the fix, have been written, deemed irrelevant (give the reason), or an issue has been created to implement the test (give the link)
[X] The PR or the original issue contains a short summary of the implemented solution.
related to #250
PR Goal
repair issue in #250
Implemented solution
see #250
Checkpoints