memory access error SIGSEGV

Greetings,

When I run "python OnlineTest.py" I get the following error:

Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)

it occurs when

success = self.info3D_model.trackFace(image.encode('utf-8'), calib_matrix_np, pointer(face_info))

is executed.

Has anyone encountered this?
I know it is some kind of memory access problem.
I'm using Ubuntu 20.04 lts.

Thank you for your help and best regards

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