HRESULT:0x80004003 Invalid pointer WinRT information: deviceId is a required parameter

I have a UWP application which has access to video call. On selecting video call an exception is thrown.

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A debugger is attached to exe but not configured to handle this unhandled exception.
To debug this exception,detach the current debugger.

When I change the debugger type to Mixed(Managed and Native) in properties.

Exception thrown at 0x76083572 in exe: Microsoft C++ exception:  
Platform::NullReferenceException ^ at memory location 0x18DBF0B0.   
HRESULT:0x80004003 Invalid pointer WinRT information: deviceId is a required parameter.