Fixed sub-multiprocessing error.

3 jobs for enhancement/add_3D_geolayer_support in 2 minutes and 15 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Test
passed test_py_tools_ds #9569

00:01:39

47.0%
passed test_styles #9570

00:00:21

 
  Cleanup
passed cleanup_pypirc #9571

00:00:14