This is the root of all your problems:
Apr 8 18:23:04 JEFFUNRAID emhttpd: shcmd (187): mkdir -p /mnt/cache
Apr 8 18:23:05 JEFFUNRAID emhttpd: shcmd (188): mount -t btrfs -o noatime,space_cache=v2 /dev/nvme1n1p1 /mnt/cache
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme1n1p1): using free space tree
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme1n1p1): has skinny extents
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme1n1p1): bdev /dev/nvme1n1p1 errs: wr 0, rd 0, flush 0, corrupt 3760, gen 0
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme1n1p1): enabling ssd optimizations
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme1n1p1): start tree-log replay
Apr 8 18:23:05 JEFFUNRAID emhttpd: shcmd (189): mkdir -p /mnt/plexvms
Apr 8 18:23:05 JEFFUNRAID emhttpd: shcmd (190): mount -t btrfs -o noatime,space_cache=v2 /dev/nvme0n1p1 /mnt/plexvms
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme0n1p1): using free space tree
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme0n1p1): has skinny extents
Apr 8 18:23:05 JEFFUNRAID kernel: BTRFS info (device nvme0n1p1): bdev /dev/nvme0n1p1 errs: wr 0, rd 0, flush 0, corrupt 195, gen 0
Apr 8 18:23:06 JEFFUNRAID kernel: BTRFS info (device nvme0n1p1): enabling ssd optimizations
Each of the cache pools has corruption.
In the case of BTRFS, this can usually be traced back to memory issues. In your case (this is not necessarily your problem though), you are running an significant overclock on your memory by running it at XMP speeds. G-Skill (along with most manufacturers) advertises and sells their memory kits running at XMP speeds (3600), but they are actually selling you 2133 memory. Disable XMP profile in the BIOS and instead run it at SPD speeds. All overclocks introduce instability.
Completely up to you, but I'm also not a fan of using BTRFS for cache pools if you have no intension of making those multi-device pools (you have 2 pools with a single device only). XFS is far more forgiving of a filesystem and causes less problems if the system is less than 100%. This requires you however to reform that pools
@JorgeB will be able to help you to recover the information on the pools properly