ValueError: I/O operation on closed file

Exception ignored in: <bound method GMS_logger.__del__ of <GMS_logger ProcessController__26186268 (DEBUG)>>
Traceback (most recent call last):
  File "/home/gfz-fe/scheffler/python/gms_preprocessing/gms_preprocessing/misc/logging.py", line 184, in __del__
  File "/home/gfz-fe/scheffler/python/gms_preprocessing/gms_preprocessing/misc/logging.py", line 169, in close
  File "/home/gfz-fe/python_GFZ/python/lib/python3.6/logging/__init__.py", line 976, in flush
  File "/home/gfz-fe/scheffler/pycharm-community-2017.3.2/helpers/pycharm/teamcity/common.py", line 53, in flush
  File "/home/gfz-fe/scheffler/pycharm-community-2017.3.2/helpers/pycharm/teamcity/common.py", line 42, in _flush_to_flush_function
ValueError: I/O operation on closed file