Error when clicking "launch"

When I’m trying to click “Launch” I’m getting 2 errors

1.“Error: ERROR: Stage Failed. Missing receipt ‘D:\Unreal Engine\Unreal Projects\ProjectIndiana2\ProjectIndiana\Binaries\Win64\ProjectIndiana.target’. Check that this target has been built.”

and error 2. "PackagingResults: Error: Launch failed! Missing UE4Game binary.
You may have to build the UE4 project with your IDE. Alternatively, build using UnrealBuildTool with the commandline:
UE4Game "

I hope you can help me as I can’t seem to figure this out! Thanks!