Won't open files

I’ve tried to import the settings from another older install on Ubuntu, but apparently shot myself in the foot.

I’ve installed via flatpak on Debian, deleted all files in my home directory from picard (/var/app/org.musicbrainz.picard, .config/MusicBrainz, .cache/Musicbrainz) and reinstalled the flatpak.

But it won’t open any files now.
MusicBrainz Picard 2.12.3

Here’s the debug log;

I: 12:15:30,364 tagger.main:1546: Sending messages to main instance: ['LOAD /home/jola/pe_music']
QSocketNotifier: Can only be used with threads started with QThread
qt.qpa.qgnomeplatform: Could not find color scheme  ""
D: 12:15:31,936 tagger.__init__:315: Starting Picard from '/app/lib/python3.11/site-packages/picard/tagger.py'
D: 12:15:31,937 tagger.__init__:316: Platform: Linux-6.1.0-23-amd64-x86_64-with-glibc2.38 CPython 3.11.9
D: 12:15:31,937 tagger.__init__:318: Versions: Picard 2.12.3, Python 3.11.9, PyQt 5.15.11, Qt 5.15.10, Mutagen 1.47.0, Discid discid 1.2.0, libdiscid 0.6.4, astrcmp C, SSL OpenSSL 3.1.6 4 Jun 2024
D: 12:15:31,937 tagger.__init__:319: Configuration file path: '/home/jola/.var/app/org.musicbrainz.Picard/config/MusicBrainz/Picard.ini'
D: 12:15:31,937 tagger.__init__:321: User directory: '/home/jola/.var/app/org.musicbrainz.Picard/config/MusicBrainz/Picard'
D: 12:15:31,937 tagger.__init__:322: System long path support: True
D: 12:15:31,937 tagger.__init__:325: Qt Env.: QT_ACCESSIBILITY='1' QT_IM_MODULE='ibus' QT_PLUGIN_PATH='/app/lib64/plugins:/app/lib/plugins:/usr/share/runtime/lib/plugins'
D: 12:15:31,937 i18n.setup_gettext:153: UI language: system
D: 12:15:31,938 i18n._log_lang_env_vars:138: Env vars: LANG=en_US.UTF-8 LC_MEASUREMENT=de_DE.UTF-8 LC_MONETARY=de_DE.UTF-8 LC_NUMERIC=de_DE.UTF-8 LC_PAPER=de_DE.UTF-8 LC_TIME=de_DE.UTF-8
D: 12:15:31,938 i18n.setup_gettext:161: Trying locales: []
D: 12:15:31,938 i18n.set_locale_from_env:81: Setting locale from env: 'LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=en_US.UTF-8'
D: 12:15:31,938 i18n.setup_gettext:178: Using locale: 'LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=en_US.UTF-8'
D: 12:15:31,939 i18n._load_translation:125: Loading gettext translation for picard, localedir='/app/share/locale', language='LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=en_US.UTF-8'
D: 12:15:31,939 i18n._load_translation:128: [Errno 2] No translation file found for domain: 'picard'
D: 12:15:31,939 i18n._load_translation:125: Loading gettext translation for picard-attributes, localedir='/app/share/locale', language='LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=en_US.UTF-8'
D: 12:15:31,939 i18n._load_translation:128: [Errno 2] No translation file found for domain: 'picard-attributes'
D: 12:15:31,939 i18n._load_translation:125: Loading gettext translation for picard-constants, localedir='/app/share/locale', language='LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=en_US.UTF-8'
D: 12:15:31,939 i18n._load_translation:128: [Errno 2] No translation file found for domain: 'picard-constants'
D: 12:15:31,939 i18n._load_translation:125: Loading gettext translation for picard-countries, localedir='/app/share/locale', language='LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=en_US.UTF-8;LC_ADDRESS=en_US.UTF-8;LC_TELEPHONE=en_US.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=en_US.UTF-8'
D: 12:15:31,939 i18n._load_translation:128: [Errno 2] No translation file found for domain: 'picard-countries'
D: 12:15:31,940 i18n.setup_gettext:201: _ = <bound method NullTranslations.gettext of <gettext.NullTranslations object at 0x7f0363cc3f50>>
D: 12:15:31,940 i18n.setup_gettext:202: N_ = <function <lambda> at 0x7f0364f4a520>
D: 12:15:31,940 i18n.setup_gettext:203: ngettext = <bound method NullTranslations.ngettext of <gettext.NullTranslations object at 0x7f0363cc3f50>>
D: 12:15:31,940 i18n.setup_gettext:204: gettext_countries = <bound method NullTranslations.gettext of <gettext.NullTranslations object at 0x7f0363cc4350>>
D: 12:15:31,940 i18n.setup_gettext:205: gettext_attributes = <bound method NullTranslations.gettext of <gettext.NullTranslations object at 0x7f0363cc41d0>>
D: 12:15:31,940 i18n.setup_gettext:206: pgettext_attributes = <bound method NullTranslations.pgettext of <gettext.NullTranslations object at 0x7f0363cc41d0>>
D: 12:15:31,942 webservice._network_accessible_changed:388: Network accessible requested: 1, actual: 1
D: 12:15:31,942 webservice.set_cache:410: NetworkDiskCache dir: '/home/jola/.var/app/org.musicbrainz.Picard/cache/MusicBrainz/Picard/network/' current size: 62.0 kB max size: 100 MB
D: 12:15:31,942 pluginmanager.load_plugins_from_directory:264: Looking for plugins in directory '/home/jola/.var/app/org.musicbrainz.Picard/config/MusicBrainz/Picard/plugins', 0 names found
D: 12:15:31,943 pluginmanager.load_plugins_from_directory:264: Looking for plugins in directory '/app/lib/python3.11/site-packages/picard/plugins', 0 names found
D: 12:15:31,947 ui/playertoolbar.__init__:91: Internal player: QtMultimedia available, initializing QMediaPlayer
D: 12:15:31,961 ui/playertoolbar.__init__:98: Internal player: available, QMediaPlayer set up
D: 12:15:32,127 tagger.main:1576: Looking for Qt locale C in /usr/translations
D: 12:15:32,127 tagger.main:1580: Qt locale C not available
I: 12:15:32,128 browser/browser.start:121: Starting the browser integration (127.0.0.1:8000)
D: 12:15:32,130 ui/coverartbox.screen_changed:99: screen changed, pixel ratio 1.0
D: 12:15:32,130 ui/coverartbox.screen_changed:99: screen changed, pixel ratio 1.0
D: 12:15:32,134 config.event:261: Config file update requested on thread 139652663543616
D: 12:15:32,309 util/remotecommands.parse_commands_to_queue:245: Queueing command: LOAD '/home/jola/pe_music'
I: 12:15:32,310 tagger.run_commands:411: Executing command: LOAD '/home/jola/pe_music'
D: 12:15:32,311 tagger.__init__:189: Parsed: ParseResult(scheme='', netloc='', path='/home/jola/pe_music', params='', query='', fragment='')
D: 12:15:32,311 tagger.handle_command_load:501: files: {'/home/jola/pe_music'}  mbids: fset()  urls: set()
D: 12:15:32,366 ui/coverartbox.screen_changed:99: screen changed, pixel ratio 1.0
D: 12:15:32,366 ui/coverartbox.screen_changed:99: screen changed, pixel ratio 1.0
D: 12:15:32,396 ui/coverartbox.screen_changed:99: screen changed, pixel ratio 1.0
D: 12:15:32,397 ui/coverartbox.screen_changed:99: screen changed, pixel ratio 1.0
I: 12:15:32,430 tagger.run_commands:447: Completed command: LOAD '/home/jola/pe_music'
D: 12:15:32,441 tagger._run_commands_finished:463: command executor stopped

Also, drag and drop gets noticed in the log, but doesn’t open anything.
Opening via the two file explorer options also prints something, but doesn’t open anything.