An unknown response null: :text/html: :Forbidden was received..

Error message when adding to cart:

"An unknown response null: :text/html: :Forbidden was received while processing an ajax call. The action you requested could not be completed."

Site bmamps.com/store
ZC 1.5.4
php 5.3.29
mySQL 5.6.33
Plugins: I'm really not sure. It was so long ago that I set t up I really can't remember. Sorry!

All was working well, no changes were made, at least on my side although the hosting service may have changed something without telling me, now I get this error.

I read this thread https://www.zen-cart.com/showthread.php?220804-An-unknown-response-null-text-html-FORBIDDEN-was-received and so checked my ajax.php was present and original

There is nothing in the debug log.

I'd really appreciate some help. Thanks.

What is being used to add items to the cart, is it just the standard add-to-cart button or is there some form of ajax add-to-cart installed? (sorry to ask about potential plugins which seem to not be recalled, but it can make a difference about what is initiating the error.)

It's just the standard button. IIRC the only plugin was FedEx shipping.

It seems that any action to do with updating the cart throws the same error: add, update, show.

Given that actually trying to hit the ajax.php file is triggering the 403 (and 403 means "forbidden", which usually is akin to "permission denied"), it's likely that something's wrong with the permissions on that file, or your webserver's security is blocking access to that file.

http://www.bmamps.com/store/ajax.php?act=ajaxPayment&method=setNoscriptCookie

Like the page which appears says, your cPanel "errors" page may expose more information about "permission denied" causes.

Your hosting company can help if there's a mod_security rule that's getting tripped.

Hi DrByte,

Thanks for the help. They had modded my .htacces file to stop all php files form executing.

Best,
CS