This is a common error and its easy to fix.
You normally see this after adding a plugin or new theme and there just isn’t enough memory. To fix this simply create a file in notepad and add this line into it
memory_limit = 256M ;
Save this as php.ini
Now upload this to your wp-admin folder
Thats it, the error is fixed.
Watch this video to see how its done.
Did you find this useful? If so please take a moment to share this below, Thanks