Hello/Hi/Greetings,

I've changed my sync_chars_regex to allow apostrophe (quote) in filenames like so: $conf['sync_chars_regex'] = "/^[(a-zA-Z0-9-_.+&áéíóúàãõ@'\[\] )]+$/";

While that passes the first test, then I get a slash inserted later somehow in this error:
[./galleries/1948/12 The Allens [Buffalo Bill\'s grave].jpg] PWG-ERROR-NO-FS (File/directory read error)

What's confusing to me is I had this working before, but created a new Piwigo installation on a new machine with the same files and can't get around this.

Piwigo version: 2.10.2
PHP version: 7.3.12
MySQL version: 5.7.29-log