Need help to resolve issues in Xamarin.iOS

Hello,

I'm facing some issues which are as below.

1) Error: error MT0024: Could not find required file
However, I am going to run my application on iOS simulator; at that time in my visual studio in Xamarin log; it shows could not find required file error.
So, please help me to resolve this issue.

2) And also getting another error in Xamarin Log as,
stderr: Failed to launch the simulator: Could not find file "/Users/manish/Library/Caches/Xamarin/mtbs/builds/RacingWorldiOS/99277448e1790730d94a6e815f6af883/bin/iPhoneSimulator/Debug/RacingWorldiOS.app/RacingWorldiOS".
error MT1008: Failed to launch the simulator: Could not find file "/Users/manish/Library/Caches/Xamarin/mtbs/builds/RacingWorldiOS/99277448e1790730d94a6e815f6af883/bin/iPhoneSimulator/Debug/RacingWorldiOS.app/RacingWorldiOS".

Please give me some suggestion or solution to resolve above issues.

Thanks in advance