Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/electrum/gui/qt/main_window.py", line 3185, in closeEvent
    self.clean_up()
  File "/usr/lib/python3.10/site-packages/electrum/gui/qt/main_window.py", line 3196, in clean_up
    self.config.set_key("is_maximized", self.isMaximized())
  File "/usr/lib/python3.10/site-packages/electrum/simple_config.py", line 162, in set_key
  File "/usr/lib/python3.10/site-packages/electrum/simple_config.py", line 171, in _set_key_in_user_config
  File "/usr/lib/python3.10/site-packages/electrum/simple_config.py", line 263, in save_user_config
OSError: [Errno 30] Read-only file system: '/home/barnusb/.electrum/config'