Fatal Error!!

Hi, I am receiving messages as the following very often when trying to access different pages of my website front end:

“Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 4965683 bytes) in /home/82/24/3012482/web/wp/wp-content/plugins/better-wp-security/modules/free/backup/class-itsec-backup.php on line 205”

This is from my iThemes dashboard:

iThemes Security variables
Build Version: 4036

Any advice? Thanks and regards,

Pablo

https://www.ads-software.com/plugins/better-wp-security/