HTML5 Javascript Issue

A problem in our project we do not know exactly the source of the current problem, we can view the error message via javascript. First, we are looking for someone who can help us with our project who can connect and control us through teamviewer or andydesk.

First, the person who can solve the problem will be paid.
First, the problem will be solved, and then the payment will be made through the site. We want to work with someone who can look at the problem and solve it. I hope you understand us.