Target-Bravo

I keep getting this message. i installed this via the CA plugin and was working till recently This version of Nextcloud is not compatible with > PHP 7.3. You are currently running 7.4.15. Tried the internal update and am currently running nextcloud 16.0.11 is there anything else I can try before I abandon all hope?

Already tried that no joy when i start the container fresh i get 2019-10-15 19:33:20.364220 [warn] PUID not defined (via -e PUID), defaulting to '99' 2019-10-15 19:33:20.733027 [warn] PGID not defined (via -e PGID), defaulting to '100' 2019-10-15 19:33:21.150279 [info] Setting permissions recursively on volume mappings... Starting unifi-video... (unifi-video) Hardware type:Unknown (unifi-video) checking for system.properties and truststore files... (unifi-video) WARNING!!!! system.properties cannot be found..restoring from : /usr/lib/unifi-video/etc/system.propetties done. it gets stuck there no web ui. if i then force a restart of the container. 2019-10-15 19:33:20.364220 [warn] PUID not defined (via -e PUID), defaulting to '99' 2019-10-15 19:33:20.733027 [warn] PGID not defined (via -e PGID), defaulting to '100' 2019-10-15 19:33:21.150279 [info] Setting permissions recursively on volume mappings... Starting unifi-video... (unifi-video) Hardware type:Unknown (unifi-video) checking for system.properties and truststore files... (unifi-video) WARNING!!!! system.properties cannot be found..restoring from : /usr/lib/unifi-video/etc/system.propetties done. Waiting for mongodb to come online.........................................................................................................................................................................................................................................................................Stopping unifi-video... done. 2019-10-15 19:42:21.317846 [warn] PUID not defined (via -e PUID), defaulting to '99' 2019-10-15 19:42:21.339894 [warn] PGID not defined (via -e PGID), defaulting to '100' 2019-10-15 19:42:21.664134 [info] Permissions already set for volume mappings Starting unifi-video... (unifi-video) Hardware type:Unknown (unifi-video) checking for system.properties and truststore files... done. Waiting for mongodb to come online..... done. And then i get the webUI however i get a login screen that i have no credentials for.

I am Unable to set up this docker for the first time, When i load the page after installing this docker it asks me for username / password. anyone know how to proceed from here?