EncryptCookies.php第59行中的FatalThrowableError Laravel

Question

我希望你能帮我解决Laravel的问题。是一个现有的项目。我想知道是否有人有同样的问题。

致命错误：调用未定义的方法App \ Http \ Middleware \ EncryptCookies :: decrypt（）

1. in EncryptCookies.php line 59
2. at EncryptCookies->handle(object(Request), object(Closure))
3. at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 136
4. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
5. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 32 
6. at Pipeline->Illuminate\Routing\{closure}(object(Request))
7. at call_user_func(object(Closure), object(Request)) in Pipeline.php

谢谢！