Bug when number of threads is given to model

[brechtwillems99]

Since MIP 1.14, I get an issue with the number of threads. With version 1.13 there was no problem.

I run on a Windows OS with Python version 3.9.10
I use CBC as solver.

Hereby I uploaded an example of the source code. It is a txt-file, as Python-files are not supported here.

On line 89 the number of threads is defined to the model.
When the value is >0, the optimization fails somewhere.
When the value is -1, there is no issue.
mainPlainText.txt