Fatal error: Uncaught Error: Class "Symfony\Component\String\AbstractString" not found in /Users/m4_production_1/Sites/ipt/iptkids/vendor/symfony/string/AbstractUnicodeString.php:29 Stack trace: #0 {main} thrown in /Users/m4_production_1/Sites/ipt/iptkids/vendor/symfony/string/AbstractUnicodeString.php on line 29