Edit file File name : form.html.twig Content :<!DOCTYPE html> <html lang="{{ app.request.locale }}"> <head> <title>{% block page_title %}{{- get_title() -}}{% endblock %}</title> </head> <body class="ajax-forms"> <div id="ajax-messages"> {{ include('@AdminLTE/Partials/_flash_messages.html.twig') }} </div> <div id="ajax-form"> {{ block('main') }} </div> </body> Save