Fatal Eroor wp-admin

I just migrated to a new host. I used Backup Buddy to do a full backup and then imported it to the new host. The site is fine but I can’t access wp-admin. I get this error: Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 1024 bytes) in /home/imim4495/public_html/todayisdifferent.com.au/wp-includes/capabilities.php on line 883