La page n’est pas redirigée correctement

[farvardin]

Describe the bug

I can't connect / use grafana. The page said:

La page n’est pas redirigée correctement

Une erreur est survenue pendant une connexion à #####

La cause de ce problème peut être la désactivation ou le refus des cookies.

(of course I've also tried to navigate in private browsing, to clean cookies etc)

Context

• Hardware: *VPS bought online *
• YunoHost version: latest 11.1.21.4
• 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?: * yes*
  • If yes, please explain: I've imported a backup from another yunohost instance
• Using, or trying to install package version/branch:
• If upgrading, current package version: 9.5.3~ynh1

Steps to reproduce

• I've backup a working grafana instance from an other server
• I've restored it through the webadmin
• I've changed the DNS (yesterday) to match the new server. Every other app are fine. Grafana keeps complaining about a wrong redirection.
• I've changed on the old server the DNS and changed the URL on the old server. On this one, grafana is working fine (even after the modification).
• I've moved grafana to an other URL, to another DNS (on the same yunohost server) on the new server
• I've uninstalled grafana, and installed it from scratch, same error
• I've uninstalled it again, and located all the old remaining grafana conf files, and removed them as well, installed grafana again on another domaine (same server), same error

Logs

• nothing looks fancy there:
• https://paste.yunohost.org/ewemaxufex