CoreCrashedError: The Tribler core has unexpectedly finished with exit code 9 and status: 1.

[sentry-for-tribler]

Sentry Issue: TRIBLER-1HS

CreationTraceback: 
  File "run_tribler.py", line 115, in <module>
  File "tribler/gui/start_gui.py", line 82, in run_gui
  File "tribler/gui/upgrade_manager.py", line 252, in on_worker_finished
  File "tribler/gui/utilities.py", line 439, in trackback_wrapper
  File "tribler/gui/core_manager.py", line 135, in start_tribler_core

CoreCrashedError: The Tribler core has unexpectedly finished with exit code 9 and status: 1.

Error message: Bad file descriptor
  File "tribler/gui/utilities.py", line 442, in trackback_wrapper
  File "tribler/gui/utilities.py", line 439, in trackback_wrapper
  File "tribler/gui/core_manager.py", line 315, in on_core_finished

[xoriole]

This error can be reproduced manually by force-killing the core process.

The PR #7699 addresses this issue by restarting the core.