Importing encrypted AEGIS backup fails

1. Enter the password for the AEGIS backup
2. Select the file to import
3. Import fails with:

2022-09-01T12:50:44.341421Z  INFO authenticator::application: Authenticator (com.belmoussaoui.Authenticator)
2022-09-01T12:50:44.341462Z  INFO authenticator::application: Version: 4.1.6 ()
2022-09-01T12:50:44.341469Z  INFO authenticator::application: Datadir: /app/share/authenticator
2022-09-01T12:50:44.364823Z  INFO authenticator::models::database: Running DB Migrations...
2022-09-01T12:50:44.365081Z  INFO authenticator::models::database: Database pool initialized.
2022-09-01T12:50:53.743574Z  INFO authenticator::widgets::camera: The camera state changed to NotFound
2022-09-01T12:51:10.688279Z  INFO authenticator::backup::aegis: Found encrypted aegis vault with version 1.
2022-09-01T12:51:10.688331Z  INFO authenticator::backup::aegis: Found possible master key with UUID b367a04b-641a-493c-8d6c-8a25787a3fcc.
2022-09-01T12:51:10.811582Z  INFO authenticator::backup::aegis: Found 1 valid password slots / master keys.
2022-09-01T12:51:10.811603Z  INFO authenticator::backup::aegis: Using only the first valid key slot / master key.
2022-09-01T12:51:10.811648Z  WARN authenticator::widgets::preferences::window: Failed to parse the selected file Deserialize decrypted database failed

• Used latest version from flathub
• #305 (closed) seems to be something different