DirectoryPaneListener 'GoToListener' raised error.

Ubuntu 18.04, x86_64 arch. The error dialog appears on Fman start with the message:

DirectoryPaneListener 'GoToListener' raised error.

Traceback (most recent call last):
  File "fman/impl/plugins/plugin.py", line 311, in _notify_listener_in_thread
  File "/opt/fman/Plugins/Core/core/commands/goto.py", line 157, in on_path_changed
    _remove_nonexistent(visited_paths, timeout_secs=0.01)
  File "/opt/fman/Plugins/Core/core/commands/goto.py", line 190, in _remove_nonexistent
    is_dir = os.path.isdir(path)
  File "genericpath.py", line 42, in isdir
UnicodeEncodeError: 'ascii' codec can't encode characters in position 23-27: ordinal not in range(128)

uname -a
Linux unatco 5.4.0-42-generic #46~18.04.1-Ubuntu SMP Fri Jul 10 07:21:24 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

If I press OK the app seems to work as normal. But the error dialog is very annoying.

Start in /opt/fman/Plugins/Core/core/commands/goto.py at on_path_changed and _remove_nonexistent, using the traceback as the entry point. Reproduce the startup error on Ubuntu 18.04 with the reported environment and inspect the non-ASCII path handling. Done means startup no longer raises the DirectoryPaneListener error while GoTo behavior remains intact.