@kumar murali  @Chandrakant Pitroda 

Sir,

In Semester II Week 3, in Building a Conference Management App, while verifying my step, I am getting the following error. Don't know when it does not found any record after query. This Unit has nothing to do with the query from my side.

Error:

There was an unexpected error in your org which is preventing this assessment check from completing: System.QueryException: List has no rows for assignment to SObject