Mir not set error code

I’m not sure what to say, but I received this error trying to run my code and I’m not sure what it means.

catch in AssembleBilinearform 2: other mir not set, pls report to developers Traceback (most recent call last): File "<string>", line 440, in <module> netgen.libngpy._meshing.NgException: other mir not set, pls report to developersin Assemble BilinearForm 'biform_from_py'

line 440 is where I assemble my bilinear form using .Assemble()

Can you upload a minimal example reproducing the issue?
If you cannot upload it publicly maybe send to christopher.lackner@tuwien.ac.at?
Best

I’ve also just encountered this error (see attached example). In my case the error only appeared after I updated from version 6.2.2101 to version 6.2.2102.

My exact error message is netgen.libngpy._meshing.NgException: other mir not set, pls report to developers

Attachment: test_2021-03-21.py

is fixed in the coming nightly, thanks for reporting,
Joachim