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Teacher, my is_update cannot be written into that session
Solve it
Whether the session is turned on, it must be at the top of the script, the first line of code, or you can turn on the whole site session
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Solve it
Whether the session is turned on, it must be at the top of the script, the first line of code, or you can turn on the whole site session