What is the first step to figure out this "Internal Error" ?

After I click the 1-Click Publish button to publish the application and access it, I get an error like the above insert image.

What do i do to figure out this?

I'd appreciate if you could tell me what is the first step.



Check the error logs in Service Center.



Please add a breakpoint in the preparation or In the server action and check there is some variable which passes null values. This will create these issues often. I hope this will help u to resolve it.