Usually there is an error message. After debugging is turned off, the framework itself blocks the error message. The display is blank. If you want to look at it at this time, you can only look at the system log file. Otherwise, it is better to turn on debug and debug and repair it before going online.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Usually there is an error message. After debugging is turned off, the framework itself blocks the error message. The display is blank. If you want to look at it at this time, you can only look at the system log file. Otherwise, it is better to turn on debug and debug and repair it before going online.