After upgrade from beta-13 to beta-15, most threads work ok but a few of the longer ones are just getting spinning wheel and (eventually) 504 Gateway time-out.
Example: https://golfbuzz.com/d/2404-just-for-fun/9594
2021/01/18 19:25:13 [error] 29671#29671: *32 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 70.95.122.193, server: golfbuzz.com, request: "GET /api/discussions/2404-just-for-fun?bySlug=true&page%5Bnear%5D=9594 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php/php7.3-fpm.sock", host: "golfbuzz.com", referrer: "https://golfbuzz.com/d/2404-just-for-fun/9594"
Seems to happen when more than ~ 200 replies in a thread.
Any ideas?
