Error Message Keeps Popping up each time i try deleting mysql database

Hello everyone, Recently, I have been trying to get rid of my sql Database off my trying to delete a mysql database in my Digital-Ocean VPS hosting. I tried entrying a drop command, here is the error i get;

ERROR 6 (HY000): Error on delete of './banabasnil//db.opt' (Errcode: 13 - Access denied).

Any solution to this issue?

I need help.