App crashes if directory name contains Chinese characters

[jonolumb]

When I drag photos from a folder whose name contains Chinese characters (for example 测试, Chinese for test), Image Optimizer crashes. If I rename the folder to only contain alphanumeric characters (for example, test), everything works fine. Would appreciate it if this issue could be fixed. Thanks!

[rusty-snake]

Identical with special german characters (äöüÄÖÜ).

[VentGrey]

That's because those chats are unicode and might not work correctly with
the actual name parsing of the application

https://wiki.gnome.org/Projects/Vala/StringSample

[Hackgets]

I also drop files with paths containing katakana which causes the app to crash.

• Zorin OS 16.1 Based on Ubuntu 20.04.3 LTS