Error in automatic backup.

Good morning.
When I logout with the administrator user and run the automatic backup, the error occurs: ' Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 36 bytes) in C:CrmVillagetecrm43htdocsmodulesUsersLogout.php on line 65.
How do I fix?
Thanks.

Is there anyone who can help me? Thank you.