MySQL identification issue

Had a massive database lose, WordPress database missing all its data and is now in Schrödinger realm. When I delete, it “SQL ERROR, Database doesn't exist". (ERROR 1008 (HY000). Yet is in existence as being listed. 

Ubuntu server on Raspberry Pi 4.

It happened to my website.

It's a bug or something,

it happened to me after a VPS reboot.

The database became corrupt.

Fortunately, I had a backup!