Nginx appears Upstream Sent Too Big Heade

Nginx appears Upstream Sent Too Big Heade

Nginx upstream sent too big header while reading response header from upstream

This problem may cause the output of 502 header information.

Perform the following two lines in nginx Configuration

Fastcgi_buffer_size 128 k; fastcgi_buffers 8 128 k;

As a result, no error is reported! The reason is that nginx processes too many headers. Another reason is that when I write a program, too many headers are sent, only once, and the program needs to be adjusted.