Error PS 1.7.5.1 Uncaught TypeError Admin

[RicRey]

Hello everyone, I have problems with the backoffice, it does not allow me to click on some modules or functions of the backoffice and it has me desperate, please if you can help me ...

the error that comes out is this:

 

Uncaught TypeError: $(...).fancybox is not a function
    at HTMLDocument.<anonymous> (index.php?controller=AdminModules&configure=advanceblog&token=2ed93af8be52eaca09cbeb26ec8eee7d:1145)
    at e (jquery.min.js:2)
    at t (jquery.min.js:2)
jquery.min.js:2 Uncaught TypeError: $(...).fancybox is not a function
    at HTMLDocument.<anonymous> (index.php?controller=AdminModules&configure=advanceblog&token=2ed93af8be52eaca09cbeb26ec8eee7d:3408)
    at e (jquery.min.js:2)
    at t (jquery.min.js:2)
jquery.min.js:2 Uncaught TypeError: $(...).fontselect is not a function
    at HTMLDocument.<anonymous> (index.php?controller=AdminModules&configure=advanceblog&token=2ed93af8be52eaca09cbeb26ec8eee7d:3480)
    at e (jquery.min.js:2)
    at t (jquery.min.js:2)

 

In the image below, in the menu where it says "configuration" a menu should scroll but it doesn't do that, and that error happens to me in several modules, I hope you can help me.