"502 bad gateway" error when opening Wordpress admin interface

[eauchat]

Hey hello, Thanks for the great package, everything has always been working fairly good so far, but recently a bug came up, that wasn't present before, don't know when it appeared exactly, in a recent update I guess, or maybe I'm doing something wrong but I can't really find what.

I'm using worpdress in "multisite" mode. Wordpress is installed at mydomain.tld/wp. The problem is that, after logging in successfully the wp-admin/ (or wp-admin/index.php) page returns a "502 bad gateway" response.

Two things to specify:

• The problem doesn't occur for the root site: mydomain.tld/wp/wp-admin/ opens properly, but every other sites admin panel (mydomain/wp/somesite/wp-admin/) respond with "502 bad gateway".
• The 502 response seems to occur only when opening mydomain/wp/somesite/wp-admin/ or mydomain/wp/somesite/wp-admin/index.php, I managed to access other parts of the admin panel opening: mydomain/wp/somesite/wp-admin/edit.php for example.

The bug occurs both for the wordpress admin user, and with sites admin users.

About wordpress and yunohost. I'm using the last versions, just updated the server. So wordpress 5.7~ynh1. But the problem was also present in 5.6 before upgrading.

If there's anything I'm doing wrong, please tell me. Otherwise I hope the bug report is useful :)

[kay0u]

Hi!

I can reproduce the issue, and I found a workaround:

When I try to visit the admin part of a specific site, I have an error message in the file /var/log/nginx/domain.tld-error.log Something like:

2021/04/07 13:57:44 [error] 37788#37788: *655 FastCGI sent in stderr: "PHP message: WordPress database error Table 'wordpress.wp_2_auto_updates' doesn't exist for query [...]

My workaround is to disable/re-enable the plugin Companion Auto Update in the "Network Admin" area.

I have to redo this dirty hack each time I add a new site.

[eauchat]

Yep I confirm that it works for me as well to disable/re-enable the extension. That's cool to have a workaround :)