Fatal Python error: Segmentation fault

Thread 0x00007efc6affd700 (most recent call first):
  File "/usr/lib/python3.6/site-packages/UM/Backend/Backend.py", line 155 in _storeStderrToLogThread
  File "/usr/lib/python3.6/threading.py", line 864 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc6b7fe700 (most recent call first):
  File "/usr/lib/python3.6/site-packages/UM/Backend/Backend.py", line 147 in _storeOutputToLogThread
  File "/usr/lib/python3.6/threading.py", line 864 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc78fc0700 (most recent call first):
  File "/usr/lib/cura/plugins/USBPrinting/USBPrinterOutputDeviceManager.py", line 86 in _updateThread
  File "/usr/lib/python3.6/threading.py", line 864 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc7a33d700 (most recent call first):
  File "/usr/lib/cura/plugins/RemovableDriveOutputDevice/RemovableDrivePlugin.py", line 61 in _updateThread
  File "/usr/lib/python3.6/threading.py", line 864 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc7b7fe700 (most recent call first):
  File "/usr/lib/python3.6/threading.py", line 295 in wait
  File "/usr/lib/python3.6/threading.py", line 426 in acquire
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 86 in _nextJob
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 116 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc7bfff700 (most recent call first):
  File "/usr/lib/python3.6/threading.py", line 295 in wait
  File "/usr/lib/python3.6/threading.py", line 426 in acquire
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 86 in _nextJob
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 116 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc8890a700 (most recent call first):
  File "/usr/lib/python3.6/threading.py", line 295 in wait
  File "/usr/lib/python3.6/threading.py", line 426 in acquire
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 86 in _nextJob
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 116 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Thread 0x00007efc8910b700 (most recent call first):
  File "/usr/lib/python3.6/threading.py", line 295 in wait
  File "/usr/lib/python3.6/threading.py", line 426 in acquire
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 86 in _nextJob
  File "/usr/lib/python3.6/site-packages/UM/JobQueue.py", line 116 in run
  File "/usr/lib/python3.6/threading.py", line 916 in _bootstrap_inner
  File "/usr/lib/python3.6/threading.py", line 884 in _bootstrap

Current thread 0x00007efcabc77540 (most recent call first):
  File "/usr/lib/python3.6/site-packages/UM/Qt/QtApplication.py", line 236 in initializeEngine
  File "/usr/lib/python3.6/site-packages/cura/CuraApplication.py", line 730 in run
  File "/usr/bin/cura", line 141 in <module>
Segmentation fault (core dumped)