[Bug]: TopBar.py looks for a missing preset file on first launch

[Arcitec]

On every freshly cloned installation of OneTrainer (into a new, blank installation directory), train_ui.py triggers the following error on first launch:

Traceback (most recent call last):
  File "modules/ui/TopBar.py", line 196, in __load_current_config
    with open(filename, "r") as f:
FileNotFoundError: [Errno 2] No such file or directory: 'training_presets/#.json'