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Notice: Trying to access array offset on value of type null in /var/www/html/autocar/vendor/symfony/framework-bundle/Resources/views/Form/choice_widget.html.php on line 4

Fatal error: Uncaught Error: Call to a member function block() on null in /var/www/html/autocar/vendor/symfony/framework-bundle/Resources/views/Form/choice_widget.html.php:4 Stack trace: #0 {main} thrown in /var/www/html/autocar/vendor/symfony/framework-bundle/Resources/views/Form/choice_widget.html.php on line 4