Using Arabic letters in the name of a vocal for separation breaks the tool

If you try to separate a voice in the Web UI and the input name has Arabic letters, it will break.

To reproduce, access the Web UI and do the following:

• Click on the "Vocals/Accompaniment Separation & Reverberation Removal".
• Drag a file that has Arabic letters in the name, use this for example as the name: "الدهر ذو دول". Extension part doesn't make a difference, just change the name to something Arabic or use the example name I provided above.
• Configure the rest of the settings as you wish.
• Click "Convert".

If you follow the above steps correctly, you should face an issue in the "Output information" box.

It somehow throws a FileNotFoundError, although the file exists.

There seems to be a problem with handling Arabic letters, maybe other languages too but Arabic is what I tried.

You can basically change the name to some English name and it will work but still interesting to see why this fails.

Start in the Web UI's "Vocals/Accompaniment Separation & Reverberation Removal" flow and reproduce the failure with the Arabic filename "الدهر ذو دول". Trace the resulting FileNotFoundError and verify that separation completes and the Output information box works with Arabic filenames.