Add Exception Handler

[aprajshekhar]

Is your chore related to a problem? Please describe

Exceptions create 500 Internal Server Error. Even when exceptions are the result of connection error or error sent by clients/upstream systems.

Describe the solution you'd like

For any exception that relates to internal or upstream system should provide specific errors:

• 500 for internal exceptions
• 502/503 for upstream exceptions

The response should have:

• status
• short message w/r/t exception
• detailed message w/r/t exception

Describe alternatives you've considered

None

Additional context

None