Fatal error: Uncaught Error: Class "Symfony\Component\Console\Output\StreamOutput" not found in D:\Apache24\www\备份\hl_eis\vendor\symfony\console\Output\ConsoleOutput.php:30 Stack trace: #0 {main} thrown in D:\Apache24\www\备份\hl_eis\vendor\symfony\console\Output\ConsoleOutput.php on line 30