Do you think this article (https://kb.plesk.com/en/122876) may be appropriate to me? Because in my case, Plesk didn't fail after an upgrade, but the error message is the same...
hello,
This titled error when i try to connect plesk...
it happened after a general error :
Error: SQLSTATE[HY000]: General error: 1030 Got error 28 from storage engine
due to a saturated partition
When i made free space, and restarted, all servers/services were ok, except plesk access ...