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Backup Buddy Error

Trying to sync my backupbuddy plugin to my two websites on the same shared hosting account.
The backup buddy plugin works fine when starting backups etc, but it wont show any of my local backups made previously or anly local backups whatsoever.
When I try to sync the data this is the error I get.

MainWP_Child fatal error : Uncaught Error: Call to undefined function pb_backupbuddy_aasort() in /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php:1867 Stack trace: #0 /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php(1095): MainWP\Child\MainWP_Child_Back_Up_Buddy->get_recent_backup_list() #1 /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php(400): MainWP\Child\MainWP_Child_Back_Up_Buddy->backup_list() #2 /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-callable.php(680): MainWP\Child\MainWP_Child_Back_Up_Buddy->action() #3 [internal function]: MainWP\Child\MainWP_Child_Callable->backup_buddy() #4 /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-callable.php(232): call_user_func(Array) #5 /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/cla Line: 1867 File: /home2/rniinc/cleaningfulservices.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php

It says the same thing here with my other site too:

MainWP_Child fatal error : Uncaught Error: Call to undefined function pb_backupbuddy_aasort() in /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php:1867 Stack trace: #0 /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php(1095): MainWP\Child\MainWP_Child_Back_Up_Buddy->get_recent_backup_list() #1 /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php(400): MainWP\Child\MainWP_Child_Back_Up_Buddy->backup_list() #2 /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-callable.php(680): MainWP\Child\MainWP_Child_Back_Up_Buddy->action() #3 [internal function]: MainWP\Child\MainWP_Child_Callable->backup_buddy() #4 /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-callable.php(232): call_user_func(Array) #5 /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-callable.php(173): M Line: 1867 File: /home2/rniinc/aboundagency.com/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-buddy.php

Anyone have any idea?