Qt has caught an exception thrown from an event handler. Throwing exceptions from an event handler is not supported in Qt. You must reimplement QApplication::notify() and catch all exceptions there.

[Screenshot from 2016-06-17 13:49:42.png](/upfiles/14661538182530175.png) Please help me with the error. I have tried searching on the net but I am not able to find the answer. Also I new to Ubuntu and gazebo.