AdminLTE version is v5.9 - php.socket-0 Connection refused

Hello,

just upgraded to the new image pihole/pihole:latest
here the version status:

  Pi-hole version is v5.7 (Latest: v5.7)
  AdminLTE version is v5.9 (Latest: v5.9)
  FTL version is v5.12 (Latest: v5.12)

the localhost/admin page return a 404
I noticed this inside the docker instance:

unlink /var/run/lighttpd/php.socket-0 after connect failed: Connection refused

root@2d77a06f3f0c:/var/log/lighttpd# tail -f error.log
2021-12-24 12:34:51: (server.c.1464) server started (lighttpd/1.4.53)
2021-12-24 12:40:58: (server.c.1464) server started (lighttpd/1.4.53)
2021-12-24 12:40:58: (gw_backend.c.476) unlink /var/run/lighttpd/php.socket-0 after connect failed: Connection refused

pihole is working but not the admin page.

Thanks for your help