As shown in the picture: 
This waiting time is too long and has seriously affected the user experience. How to optimize this waiting time? Written using Yii framework
殘留の回憶2019-02-23 09:39:43
I can’t provide any advice on this. You can debug the program at the break point, exit from top to bottom, and wait to see which line of code causes the problem and then deal with it.
