Mysqli_query failed error when sending campaign email

Hi there, up until today everything has been working fine, however, I tried to send an email campaign and got the following error (when I sent a test mail on the campaign):

“Database failure. Please refer to suitecrm.log for details.”

I reviewed the log file and found the following lines:

“Mon Apr 12 12:34:55 2021 [3849][1][FATAL] Mysqli_query failed.
Mon Apr 12 12:34:55 2021 [3849][1][FATAL] Query Failed: select * from versions: MySQL error 1146: Table ‘mydatabasename.versions’ doesn’t exist”

Can anyone advise or assist with this?

Just to add, the only changes I’ve made was this morning in the config.php & include/utils.php, where I changed the ‘default_permissions’ to the following:
‘dir_mode’ => 1533,
‘file_mode’ => 493,

Not sure if this could be causing the problem?