Fatal error: Uncaught Error: Class "s9e\TextFormatter\Configurator\TemplateChecks\AbstractXSLSupportCheck" not found in /opt/lampp/htdocs/forum/flarum/vendor/s9e/text-formatter/src/Configurator/TemplateChecks/DisallowUncompilableXSL.php:13 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/s9e/text-formatter/src/Configurator/TemplateChecks/DisallowUncompilableXSL.php on line 13