Debugger doesn't work, "Frame not in module"?

Question

hi,

Start Debugging on my application in Visual Studio 2015 with my Android device, it will display this message every time .
"Frame not in module
the current stack frame was not found in a module.source conn't be shown for this location.
to always view disassembly for missing source files,change the setting in the options dialog".

How can I get this to work?