after stoli's migration, it seems that mybb is showing some internal database error on showthread.php

saying
MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1017 - Can't find file: 'mybb_threadviews' (errno: 2)
Query:
INSERT INTO mybb_threadviews (tid) VALUES('817')
Please contact the MyBB Group for support.

i contacted mybb and they say i should ask the host about this
i recently saw that the said table in phpmyadmin instead of the Browse, Structure or Insert Buttons, it says "in use"

i don't know why but please fix it, thanks!