Hello,
I was working on my site normally, troubleshooting an issue activating and deactivating plugins, but then I started receiving 504 errors when trying to visit the plugins page or update page. And also when trying to activate plugins.
In the error log I see:
[error] 61508#61508: *26537 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 77.111.246.40, server: <domain>, request: "GET /wp-admin/plugins.php HTTP/2.0", upstream: "fastcgi://127.0.0.1:9000", host: "<domain>", referrer: "https://<domain>/wp-admin/"
Have you seen this before? The server is a fully updated Ubuntu 20.04
Thanks