php5.2 + TP3.1 A blank page appears after turning off debug

Question

php5.2 TP3.1 A blank page appears after debug is turned off
There will be no problem with a higher version of PHP. Can anyone give me some advice?

Answer 1

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.