$ cat ~/.local/share/qtile/qtile.log
2021-05-17 09:24:12,184 ERROR libqtile core.py:__init__():L95 not starting; existing window manager GNOME Shell
2021-05-17 09:46:52,841 ERROR libqtile manager.py:process_key_event():L346 KB command error shuffle_right: Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/command/interface.py", line 312, in call
    return SUCCESS, cmd(*args, **kwargs)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/layout/xmonad.py", line 710, in cmd_swap_right
    target = self._get_closest(x, y, candidates)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/layout/xmonad.py", line 685, in _get_closest
    target = min(
ValueError: min() arg is an empty sequence

2021-05-17 09:47:47,801 ERROR libqtile manager.py:process_key_event():L346 KB command error right: Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/command/interface.py", line 312, in call
    return SUCCESS, cmd(*args, **kwargs)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/layout/xmonad.py", line 733, in cmd_right
    self.clients.current_client = self._get_closest(x, y, candidates)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/layout/xmonad.py", line 685, in _get_closest
    target = min(
ValueError: min() arg is an empty sequence

2021-05-17 09:50:24,837 ERROR libqtile base.py:on_done():L542 Failed to reschedule.
Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/widget/base.py", line 534, in on_done
    self.update(result)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/widget/base.py", line 550, in update
    old_width = self.layout.width
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/drawer.py", line 80, in width
    return self.layout.get_pixel_size()[0]
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/pangocffi.py", line 132, in get_pixel_size
    pango.pango_layout_get_pixel_size(self._pointer, width, height)
TypeError: initializer for ctype 'PangoLayout *' must be a cdata pointer, not NoneType
2021-05-17 09:50:24,845 WARNING libqtile lifecycle.py:_atexit():L34 Restarting Qtile with os.execv(...)
2021-05-17 09:52:23,156 WARNING libqtile lifecycle.py:_atexit():L34 Restarting Qtile with os.execv(...)
2021-05-17 09:53:23,291 WARNING libqtile config.py:<module>():L298 Test
2021-05-17 09:53:23,298 WARNING libqtile lifecycle.py:_atexit():L34 Restarting Qtile with os.execv(...)
2021-05-17 09:53:24,143 WARNING libqtile config.py:<module>():L298 Test
2021-05-17 09:54:10,045 ERROR libqtile manager.py:process_key_event():L346 KB command error right: Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/command/interface.py", line 312, in call
    return SUCCESS, cmd(*args, **kwargs)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/layout/xmonad.py", line 733, in cmd_right
    self.clients.current_client = self._get_closest(x, y, candidates)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/layout/xmonad.py", line 685, in _get_closest
    target = min(
ValueError: min() arg is an empty sequence

2021-05-17 09:56:18,673 WARNING libqtile lifecycle.py:_atexit():L34 Restarting Qtile with os.execv(...)
2021-05-17 09:57:45,400 ERROR libqtile base.py:on_done():L542 Failed to reschedule.
Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/widget/base.py", line 534, in on_done
    self.update(result)
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/widget/base.py", line 550, in update
    old_width = self.layout.width
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/drawer.py", line 80, in width
    return self.layout.get_pixel_size()[0]
  File "/home/USER/.local/lib/python3.8/site-packages/libqtile/pangocffi.py", line 132, in get_pixel_size
    pango.pango_layout_get_pixel_size(self._pointer, width, height)
TypeError: initializer for ctype 'PangoLayout *' must be a cdata pointer, not NoneType
2021-05-17 09:57:45,401 WARNING libqtile lifecycle.py:_atexit():L34 Restarting Qtile with os.execv(...)
2021-05-17 09:58:07,347 WARNING libqtile config.py:<module>():L298 Num Monitors is 3
2021-05-17 09:58:07,353 WARNING libqtile lifecycle.py:_atexit():L34 Restarting Qtile with os.execv(...)
2021-05-17 09:58:08,192 WARNING libqtile config.py:<module>():L298 Num Monitors is 3