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Fatal error: Uncaught ValueError: proc_open(): Argument #2 ($descriptor_spec) must only contain arrays and streams in /var/www/vhosts/collection-anders.de/httpdocs/vendor/symfony/process/Process.php:360 Stack trace: #0 /var/www/vhosts/collection-anders.de/httpdocs/vendor/symfony/process/Process.php(360): proc_open() #1 /var/www/vhosts/collection-anders.de/httpdocs/app/lib/Process/CLI.php(95): Symfony\Component\Process\Process->start() #2 /var/www/vhosts/collection-anders.de/httpdocs/app/lib/Process/CLI.php(57): CA\Process\CLI->execute() #3 /var/www/vhosts/collection-anders.de/httpdocs/app/lib/Process/Background.php(69): CA\Process\CLI->run() #4 /var/www/vhosts/collection-anders.de/httpdocs/app/lib/Controller/Request/RequestHTTP.php(750): CA\Process\Background::run() #5 /var/www/vhosts/collection-anders.de/httpdocs/index.php(143): RequestHTTP->close() #6 {main} thrown in /var/www/vhosts/collection-anders.de/httpdocs/vendor/symfony/process/Process.php on line 360