SSL Problem - Zertifikat kann nicht gefunden werden

Hallo,
ich versuche nach mehreren Tagen erfolglos Vaultwarden einzurichten.

Ich selbst greife über eine eigene Domain, mithilfe von Cloudflare auf meine HA Instanz zu.

Zugriff per HTTPS ist möglich, weshalb ich davon ausgehe, dass SSL Grundsätzlich vorhanden ist (seitens Cloudflare nehme ich an).

Ich bin Laie in diesem Bereich.

Starte ich jetzt Vaultwarden, sagt er mir:

[11:39:47] FATAL: 
[11:39:47] FATAL: SSL has been enabled using the 'ssl' option,
[11:39:47] FATAL: this requires an SSL certificate file which is
[11:39:47] FATAL: configured using the 'certfile' option in the
[11:39:47] FATAL: add-on configuration.
[11:39:47] FATAL: 
[11:39:47] FATAL: Unfortunately, the file specified in the
[11:39:47] FATAL: 'certfile' option does not exist.
[11:39:47] FATAL: 
[11:39:47] FATAL: Please ensure the certificate file exists and
[11:39:47] FATAL: is placed in the '/ssl/' directory.
[11:39:47] FATAL: 
[11:39:47] FATAL: In case you don't have SSL yet, consider getting
[11:39:47] FATAL: an SSL certificate or setting the 'ssl' option
[11:39:47] FATAL: to 'false' in case you are not planning on using
[11:39:47] FATAL: SSL with this add-on.
[11:39:47] FATAL: 
[11:39:47] FATAL: Check the add-on manual for more information.
[11:39:47] FATAL: 
s6-rc: warning: unable to start service init-nginx: command exited 1
/run/s6/basedir/scripts/rc.init: warning: s6-rc failed to properly bring all the services up! Check your logs (in /run/uncaught-logs/current if you have in-container logging) for more information.
/run/s6/basedir/scripts/rc.init: fatal: stopping the container.
s6-rc: info: service vaultwarden: stopping
[11:39:47] INFO: Service Vaultwarden exited with code 256 (by signal 15)
s6-rc: info: service vaultwarden successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service base-addon-timezone: stopping
s6-rc: info: service base-addon-log-level: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service base-addon-timezone successfully stopped
s6-rc: info: service base-addon-log-level successfully stopped
s6-rc: info: service base-addon-banner: stopping
s6-rc: info: service base-addon-banner successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped

Hat jemand eine Idee, wie ich dieses Problem beheben kann?