An internal error occurred in the application

What causes this issue?

An internal error occurred in the application in method &V1& of ABAP
class &V2&.

System Response

The system terminates the action.

How to fix this error?

Contact your system administration.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.