File "/home/nate/.local/lib/python3.9/site-packages/electrum/gui/qt/main_window.py", line 3018, in closeEvent
  File "/home/nate/.local/lib/python3.9/site-packages/electrum/gui/qt/main_window.py", line 3024, in clean_up
  File "/home/nate/.local/lib/python3.9/site-packages/electrum/simple_config.py", line 160, in set_key
  File "/home/nate/.local/lib/python3.9/site-packages/electrum/simple_config.py", line 169, in _set_key_in_user_config
  File "/home/nate/.local/lib/python3.9/site-packages/electrum/simple_config.py", line 261, in save_user_config