gRPC issue: Exception iterating requests!

[germa89]

[FAILED] test_mpfunctions - tests/test_mapdl.py:1520: ansys.mapdl.core.errors.MapdlExitedError: 
Error: MAPDL server connection terminated unexpectedly while running:
/__w/pymapdl/pymapdl/test.mp22 called by: 
upload  MAPDL instance: /tmp/pytest-of-mapdl/pytest-0/ansys0 127.0.0.1:50052 
Error: Exception iterating requests!
Full error: <_InactiveRpcError of RPC that terminated with: status = StatusCode.UNKNOWN details = "Exception iterating requests!" debug_error_string = "None" >