Seafile WebDAV not working

[bitdweller]

My YunoHost server

Hardware: VPS: OVH
YunoHost version: 11.1.11.2 (stable)
I have access to my server : Through SSH & through the webadmin
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no (although it’s based on Debian 11)
If your request is related to an app, specify its name and version: Seafile 9.0.2~ynh2

Description of my issue

I can’t access Seafile through WebDAV, getting a 502 Bad Gateway error. Seafile works fine, also with macOS and Android official apps, just not WebDAV. It is properly configured, here are the config files:

(i have obscured my domain with domain.tld, but the subdomain is the same)

/etc/yunohost/apps/seafile/conf/seafdav.conf:

[WEBDAV]
enabled = true
port = __WEBDAV_PORT__
fastcgi = true
share_name = /seafdav

/etc/nginx/conf.d/files.domain.tld.d/seafile.conf

location /seafdav {
        proxy_pass         http://127.0.0.1:8080/seafdav;
        proxy_set_header   Host $host;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Host $server_name;
        proxy_set_header   X-Forwarded-Proto $scheme;
        proxy_read_timeout  1200s;
        client_max_body_size 0;

        access_log      /var/log/nginx/seafdav.access.log;
        error_log       /var/log/nginx/seafdav.error.log;
}

Logs:
(Note: domain.tld is current obscured domain and domain.old is an old domain I had configured, also obscured)
Seafile: https://paste.yunohost.org/etacaraboc
Nginx: https://paste.yunohost.org/ilejukupeb.coffeescript

There’s a different Topic that shows the same error, but I wanted to create a more generic one, as that one is related to integration Joplin with Seafile, although the problem is with Seafile.

Thanks y’all!