Fatal error: Allowed memory size wp-settings.php on line 307

if you get an error like this: Fatal error: Allowed memory size wp-settings.php on line 307

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 235726 bytes) in /home/uno1093/public_html/wp-includes/class-simplepie.php on line 13070

or

Fatal error: Allowed memory size wp-settings.php on line 307

add this line to your wp-config.php
define('WP_MEMORY_LIMIT', '64M');