两年前的项目，升级后，提示Waring: Events::onMessage is not callable，请问如何解决？

[swanfly]

php没有用任何框架，下面是启动日志。
[root@ecs-beijing-1 im]# php start.php start
start/www/wwwroot/www.quweilai.cn/mars/imWorkerman[start.php] start in DEBUG mode
--------------------------------------------- WORKERMAN ----------------------------------------------
Workerman version:4.1.0 PHP version:7.4.30 Event-Loop:\Workerman\Events\Select
---------------------------------------------- WORKERS -----------------------------------------------
proto user worker listen processes status
tcp root mars_im_business none 4 [OK]
ssl root mars_im_gateway websocket://0.0.0.0:8282 4 [OK]
tcp root Register text://0.0.0.0:1238 1 [OK]

Press Ctrl+C to stop. Start success.
Waring: Events::onMessage is not callable
Waring: Events::onMessage is not callable
Waring: Events::onMessage is not callable
Waring: Events::onMessage is not callable

[walkor]

https://github.com/walkor/workerman-chat/blob/master/composer.json
参考设置下autoload，然后执行 composer dumpautoload