Fatal error: Uncaught Symfony\Component\ErrorHandler\Error\UndefinedFunctionError: Attempted to call function "highlight_file" from namespace "Symfony\Component\ErrorHandler\ErrorRenderer". in /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php:254
Stack trace:
#0 /htdocs/app/vendor/symfony/error-handler/Resources/views/trace.html.php(36): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->fileExcerpt('/htdocs/app/ven...', 254, 5)
#1 /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(336): include('/htdocs/app/ven...')
#2 /htdocs/app/vendor/symfony/error-handler/Resources/views/traces.html.php(40): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/trace.htm...', Array)
#3 /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(336): include('/htdocs/app/ven...')
#4 /htdocs/app/vendor/symfony/error-handler/Resources/views/exception.html.php(55): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/traces.ht...', Array)
#5 /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(336): include('/htdocs/app/ven...')
#6 /htdocs/app/vendor/symfony/error-handler/Resources/views/exception_full.html.php(35): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/exception...', Array)
#7 /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(336): include('/htdocs/app/ven...')
#8 /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(140): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->include('views/exception...', Array)
#9 /htdocs/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php(72): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->renderException(Object(Symfony\Component\ErrorHandler\Exception\FlattenException))
#10 /htdocs/app/vendor/symfony/error-handler/ErrorHandler.php(650): Symfony\Component\ErrorHandler\ErrorRenderer\HtmlErrorRenderer->render(Object(Symfony\Component\ErrorHandler\Exception\FlattenException))
#11 /htdocs/app/vendor/symfony/error-handler/ErrorHandler.php(538): Symfony\Component\ErrorHandler\ErrorHandler->renderException(Object(Symfony\Component\ErrorHandler\Error\UndefinedFunctionError))
#12 /htdocs/app/vendor/symfony/error-handler/ErrorHandler.php(554): 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/app/vendor/symfony/error-handler/ErrorRenderer/HtmlErrorRenderer.php on line 254