javascript – Why can’t host my own copy of MathJax locally?

With cdn service to render latex in html.

   
   
   
     
     
   
   
   
   
   First of all, we can "relax" the $\forall$-Introduction rule : $A \to B \vdash A \to \forall x B$, provided that $x$ is not *free* in $A$.
   
   

All latex shows fine in html.

I want to deploy the mathjax service locally.

Download the MathJax.js directly ,MathJax.js can open with the link: 127.0.0.1/wp/MathJax.js,set the src as below:

latex can’t be shown.

Maybe some useful files haven’t download,so i git all mathjax’s file as the mathjax official document(mathjax official document) denote,and copy all of them to apache’s document directory.

git clone https://github.com/mathjax/MathJax.git mathjax

tex-chtml can open in the url http://127.0.0.1/mathjax/es5/tex-chtml.js,write the html:

   
   
   
     
     
   
   
   
   
   First of all, we can "relax" the $\forall$-Introduction rule : $A \to B \vdash A \to \forall x B$, provided that $x$ is not *free* in $A$.
   
   

Restart my apache,no error info on firefox’s debug,but the line haven’t been rendered by mathjax.

How to fix it?