GELÖST: PHP-Warnung Debug-Modus und Contao Manager

[Transparenz]

Beim erneuern des Prod.-Cache im Manager bekomme ich folgende PHP-Warnung:

DOMDocument::loadXML(): Empty string supplied as input in /xxx/htdocs/standard/vendor/contao/core-bundle/src/Config/Loader/XliffFileLoader.php on line 103

Das wäre nicht sooo schlimm Aber dieser Fehler scheint auch die Anzeige vom Backend beim Aktivieren des Debug-Modus zu verhindern.

Meine bisherigen Recherchen lieferten mir keinen brauchbaren Anhaltspunkt, der Fehler tritt auch bei anderen Installationen/Hostings auf.
Was kann ich tun? Vielen Dank für jede Hilfe.

Hier das dev-log:

[2021-07-28 11:08:29] request.INFO: Matched route "contao_backend". {"route":"contao_backend","route_parameters":{"_route":"contao_backend","_scope":"backend","_token_check":true,"_controller":"Contao\\CoreBundle\\Controller\\BackendController::mainAction"},"request_uri":"https://standard.schmidundkeck.de/contao","method":"GET"} []
[2021-07-28 11:08:29] security.DEBUG: Read existing security token from the session. {"key":"_security_contao_backend","token_class":"Symfony\\Component\\Security\\Core\\Authentication\\Token\\UsernamePasswordToken"} []
[2021-07-28 11:08:29] security.DEBUG: User was reloaded from a user provider. {"provider":"Contao\\CoreBundle\\Security\\User\\ContaoUserProvider","username":"admin"} []
[2021-07-28 11:08:30] request.CRITICAL: Uncaught PHP Exception ErrorException: "Warning: DOMDocument::loadXML(): Empty string supplied as input" at /xxx/htdocs/standard/vendor/contao/core-bundle/src/Config/Loader/XliffFileLoader.php line 103 {"exception":"[object] (ErrorException(code: 0): Warning: DOMDocument::loadXML(): Empty string supplied as input at /xxx/htdocs/standard/vendor/contao/core-bundle/src/Config/Loader/XliffFileLoader.php:103)"} []
[2021-07-28 11:08:30] security.DEBUG: Stored the security token in the session. {"key":"_security_contao_backend"} []
[2021-07-28 11:08:30] request.INFO: Matched route "_wdt". {"route":"_wdt","route_parameters":{"_route":"_wdt","_controller":"web_profiler.controller.profiler::toolbarAction","token":"b3634a"},"request_uri":"https://standard.schmidundkeck.de/_wdt/b3634a","method":"GET"} []
[2021-07-28 11:08:51] request.INFO: Matched route "_profiler". {"route":"_profiler","route_parameters":{"_route":"_profiler","_controller":"web_profiler.controller.profiler::panelAction","token":"b3634a"},"request_uri":"https://standard.schmidundkeck.de/_profiler/b3634a?panel=logger","method":"GET"} []
[2021-07-28 11:08:51] request.INFO: Matched route "_profiler_search_bar". {"route":"_profiler_search_bar","route_parameters":{"_route":"_profiler_search_bar","_controller":"web_profiler.controller.profiler::searchBarAction"},"request_uri":"https://standard.schmidundkeck.de/_profiler/search_bar?panel=logger","method":"GET"} []
[2021-07-28 11:09:48] app.DEBUG: Router Symfony\Bundle\FrameworkBundle\Routing\Router was not able to match, message "No routes found for "/contao-manager/users.json/"." [] []
[2021-07-28 11:09:48] app.DEBUG: Router Symfony\Cmf\Component\Routing\DynamicRouter was not able to match, message "" [] []
[2021-07-28 11:09:48] request.INFO: Matched route "tl_page.5.error_404". {"route":"tl_page.5.error_404","route_parameters":{"_token_check":true,"_controller":"Contao\\FrontendIndex::renderPage","_scope":"frontend","_locale":"de","pageModel":"[object] (Contao\\PageModel: {})","_url_fragment":"contao-manager/users.json","_route":"tl_page.5.error_404"},"request_uri":"https://standard.schmidundkeck.de/contao-manager/users.json","method":"GET"} []
[2021-07-28 11:09:48] security.INFO: Populated the TokenStorage with an anonymous Token. [] []
[2021-07-28 11:09:48] app.DEBUG: Router Symfony\Bundle\FrameworkBundle\Routing\Router was not able to match, message "No routes found for "/contao-manager/users.json/"." [] []
[2021-07-28 11:09:48] app.DEBUG: Router Symfony\Cmf\Component\Routing\DynamicRouter was not able to match, message "" [] []
[2021-07-28 11:09:48] app.DEBUG: Router Symfony\Bundle\FrameworkBundle\Routing\Router was unable to generate route. Reason: 'Route 'contao_index' not found': Unable to generate a URL for the named route "contao_index" as such route does not exist. [] []
[2021-07-28 11:09:48] app.DEBUG: Executing cron job "Contao\CoreBundle\Cron\LegacyCron::onMinutely" [] []

[Spooky]

Hast du eigene Übersetzungen in XLF Dateien? Wenn ja ist dort wohl etwas nicht korrekt eingetragen.

[Transparenz]

Ich hatte tatsächlich eine default.xlf als Vorbereitung angelegt, diese war jedoch leer. Das hat Contao wohl nicht geschmeckt...

Lösung: Keine leeren xlf-Dateien anlegen.

Vielen Dank