Problem with server push with wordpress 502 bad gateway


#1

its working wp dashboard
entire website but when editing posts not working.

PHP message: Cannot Server Push (header size over 3072 Bytes).

https://employmentnewsdaily.in/wp-admin/post.php?post=20725&action=edit

when i deactivate the plugin above url working. but after i activate the plugin getting 502 bad gateway, and an error message in log which cannot server push.

i have nginx 1.13.9 which they already added support for server push. but without plugin server push not working with Cloudflare ssl.
my server buffers are high
client_header_buffer_size 32k;
fastcgi_busy_buffers_size 512k;
fastcgi_buffer_size 512k;
fastcgi_buffers 16 512k;


#2

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