call_user_func_array() expects parameter 1 to be a valid callback, class 'app\facade\Test' does not have a method 'hello'
It is completely based on the three files written in the manual and video , how could it go wrong?
tp5.1
What version of php are you using? I guess your php version may be too low.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
What version of php are you using? I guess your php version may be too low.