Button click not firing after hosting in production server

Question

I am facing problem in button click event after hosting in production server. Same code and script works well and good in my local system.

For reference i have the form with 3 panels having "Back" and "Continue" buttons. Each button enable/disable the panel respectively.

In last panel i have "Finish" button, this code is not firing in the production server.

Error message displayed on the status bar as follows:

Message: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500
Line: 939
Char: 13
Code: 0