Big Thank You to @Samuel_Tai and @SmallBarky for the support and guidance. I have found a thread that address this sort of issue (help-pool-vanished-on-truenas-scale-install/51661).
I have ordered a replacement disk that will be here tomorrow morning. I plan to attempt to Backup and Repair the GPT data see if I can bring the pool back. If not, I will wipe the disks and rebuild form scratch and then restore my backups. Wish me luck.