But You Easily Solve this error with just increase your memory limit for many installs on wordpress.
define( ‘WP_MAX_MEMORY_LIMIT’, ‘256M’ );
add this code to your wp-config.php file with ftp or cpanel and done.
you also ask for this issue for your web hosting provider to raise your limit.
Note:- most important thing every one try different plugins according there website but they dont delete unusual wordpress plugin and for these reason memory limit goes over. So remain one thing always delete unusual plugin no deactivate them.
If you have any question ask on comment.