Fatal error: Uncaught Symfony\Component\ErrorHandler\Error\UndefinedFunctionError: Attempted to call function "highlight_file" from namespace "Symfony\Component\ErrorHandler\ErrorRenderer". in /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php:271 Stack trace: #0 /htdocs/vendor/symfony/error-handler/Resources/views/trace.html.php(36): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->fileExcerpt('/htdocs/vendor/...', 271, 5) #1 /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(353): include('/htdocs/vendor/...') #2 /htdocs/vendor/symfony/error-handler/Resources/views/traces.html.php(40): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/trace.htm...', Array) #3 /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(353): include('/htdocs/vendor/...') #4 /htdocs/vendor/symfony/error-handler/Resources/views/exception.html.php(55): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/traces.ht...', Array) #5 /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(353): include('/htdocs/vendor/...') #6 /htdocs/vendor/symfony/error-handler/Resources/views/exception_full.html.php(35): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/exception...', Array) #7 /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(353): include('/htdocs/vendor/...') #8 /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(149): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/exception...', Array) #9 /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(81): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->renderException(Object(Symfony\Component\ErrorHandler\Exception\FlattenException)) #10 /htdocs/vendor/symfony/error-handler/ErrorHandler.php(719): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->render(Object(Symfony\Component\ErrorHandler\Exception\FlattenException)) #11 /htdocs/vendor/symfony/error-handler/ErrorHandler.php(607): Symfony\Component\ErrorHandler\ErrorHandler->renderException(Object(Symfony\Component\ErrorHandler\Error\UndefinedFunctionError)) #12 /htdocs/vendor/symfony/error-handler/ErrorHandler.php(623): Symfony\Component\ErrorHandler\ErrorHandler->handleException(Object(Symfony\Component\ErrorHandler\Error\UndefinedFunctionError)) #13 [internal function]: Symfony\Component\ErrorHandler\ErrorHandler->handleException(Object(Symfony\Component\ErrorHandler\Error\UndefinedFunctionError)) #14 {main} thrown in /htdocs/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php on line 271