ajax data load isssue

Jun 1 2016 8:48 AM

i have a page which have more ajax calls on page load event nearly 10 ajax calls when i run this on local host it works fine but when i run in production or host in iis it throws me error .please find the error message in image attached .

{"message ":" object reference not set to an instance of an object ."," "stackTrace":,"Exception type":"system.nullReferenceException"}"} jquery ajax call and asp.net