Fatal error: Uncaught RedisException: OOM command not allowed when used memory > ''maxmemory''. in /var/www/rouav/chat.php:407 Stack trace: #0 /var/www/rouav/chat.php(407): Redis->hMset() #1 /var/www/rouav/index.php(43): chat::post() #2 /var/www/rouav/index.php(601): core::main() #3 {main} thrown in /var/www/rouav/chat.php on line 407！！！显示的是这一堆英文