Fatal error: Allowed memory size exhausted

After activating the “Clearfy” plugin I find that I get the following error very intermittently when navigating to different parts of the admin area.

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 86 bytes) in /home/username/public_html/wp-includes/class-wp-hook.php on line 286

Is there a particular setting that I need to DE-activate within the plugin ?

Look forward to your assist.

Thanks in advance.