Returning values to the local cache

I am currently working on a program that is meant for the client to return the number of mouse clicks in the local cache as a http response. When the right mouse is clicked on the webpage, it should increment that value by one and when the left mouse is clicked it should also increment that value by one. I’m having difficulty returning those values.

This is my full HTML code: https://pastebin.com/JKJtEXjh

This is my CACHE function: https://pastebin.com/d2fZk3Pe

This is my database and web server commands: https://pastebin.com/mWGgNLd9