[eluser]Unknown[/eluser]
Please add following code in your index.php file which you found in your root folder of project.
Code:
// PHP memory value setting
ini_set('memory_limit', '512M');
if this is not solving then check your server free and used memory. If you are using linux then use "top" command to check the free and used memory.
If memory is used by other process then memory pool error will be thrown.
Hope this is helpful.