Error deleting a translation + output_format yml not working

[BBLopez]

Hi, I'm trying to use your bundle in Symfony 5 because I need a webUI.

I've tried to config this to work with yml files but that's not working:

    locales: ["ca", "es", "ar"]
    auto_add_missing_translations:
        enabled: true
    edit_in_place:
        enabled: false
    webui:
        enabled: true
    configs:
        app:
            dirs: ["%kernel.project_dir%/templates", "%kernel.project_dir%/src"]
            output_dir: "%kernel.project_dir%/translations"
            excluded_names: ["*TestCase.php", "*Test.php"]
            excluded_dirs: [cache, data, logs]
            whitelist_domains: [explicacions]
            output_format: yml

And when I try to delete the translation after I create it (only existing one in the created xlf file), I get always this error:

Invalid resource provided: "C:\wamp64\www\debat-constituent/translations\explicacions.ca.xlf"; Errors: [ERROR 1871] Element '{urn:oasis:names:tc:xliff:document:2.0}file': Missing child element(s). Expected is one of ( {urn:oasis:names:tc:xliff:document:2.0}skeleton, ##other{urn:oasis:names:tc:xliff:document:2.0}*, {urn:oasis:names:tc:xliff:document:2.0}notes, {urn:oasis:names:tc:xliff:document:2.0}unit, {urn:oasis:names:tc:xliff:document:2.0}group ). (in file:/C:/wamp64/www/debat-constituent/public/ - line 3, column 0)

I hope we can find a solution. Thanks!