The thread '<No Name>' (0x2) has exited with code

Hi,

I have a program of line following robot it used to work perfectly then I have added some functionality and now it gives strange error.Here is the main method where whole program called and the screenshot of my error. Problem probably happens when I create an instance of the class where Main method defined. Because if I will put any line to print before this it prints,if otherwise it doesn't. So can anybody tell me what this problem can be?

there is no problem, its normal. dont worry