php - This page is not functioning properly. This request cannot be processed at this time. HTTP ERROR 500?

Question

Software and environment

System: Alibaba Cloud ECS Ubuntu 16.04.2 LTS
Software: docker, lnmp image

Problem Description

When a syntax error occurs in PHP, the page appears: This request cannot be processed at this time. HTTP ERROR 500

Screenshot of question

Answer 1

500 error is probably a problem with the php code

error_reporting(“E_ALL”)

ini_set(“display_errors”, “on”)

Add these two items Code

Let the errors be exposed

Then check them one by one based on the error information

Answer 2

Due to the error display closing in the php.ini configuration file.

Change the lower value from Off to On

display_errors = On

display_startup_errors = On

Answer 3

View the error log of php-fpm