Child process error (exit code 255): PHP Fatal error: Declaration of SFC\Staticfilecache\Command\CleanBoostQueueCommand::execute(Symfony\Component\Console\Input\InputInterface $input, Symfony\Component\Console\Output\OutputInterface $output) must be compatible with Symfony\Component\Console\Command\Command::execute(Symfony\Component\Console\Input\InputInterface $input, Symfony\Component\Console\Output\OutputInterface $output): int in /home/runner/work/staticfilecache/staticfilecache/Classes/Command/CleanBoostQueueCommand.php on line 35 Fatal error: Declaration of SFC\Staticfilecache\Command\CleanBoostQueueCommand::execute(Symfony\Component\Console\Input\InputInterface $input, Symfony\Component\Console\Output\OutputInterface $output) must be compatible with Symfony\Component\Console\Command\Command::execute(Symfony\Component\Console\Input\InputInterface $input, Symfony\Component\Console\Output\OutputInterface $output): int in /home/runner/work/staticfilecache/staticfilecache/Classes/Command/CleanBoostQueueCommand.php on line 35