SupeSite info: MySQL Query Error

User: guest
Time: 2020-1-30 1:03am
Script: /index.php

SQL: UPDATE [Table]crons SET lastrun='1580317387', nextrun='1580320800' WHERE cronid='1'
Error: UPDATE command denied to user 'tybwww'@'localhost' for table '[Table]crons'
Errno.: 1142