I keep getting a white screen or line of code error in product category area.

I’ve been using jshop for sometime as of late i’ve been getting a blank white page when navigating to the site or the following error message in the product category section.

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 262144 bytes) in /home/content/p3pnexwpnas09_data01/24/2585124/html/wp-includes/taxonomy.php on line 4023

Can you please tell me what i need to do to fix this error.