Qnap Channel Restore

One of my users deleted a channel by mistake and now I’m having an issue trying to do the restore. I ran system-docker exec -it mattermost_app_1 /bin/sh to access the Docker containing the Mattermost install. I’m having an issue trying to restore our channel “URGENTINFO” as it was not archived but Deleted. I’m fairly new to the QNAP device and would appreciate some direction as to the proper format of the CLI command to locate and restore the missing channel.