Note created, but not able to delete it

I try to delete this note:

but it always says, Filename cannot contain any of the following characters…

Does one of you know this issue?

It should not be possible to create a file with this characters in the first place.

Did you try to locate the file with your systems file-browser (e.g. Finder, Explore)?
If you delete the file with your file-browser, it should also vanish from Obsidian.