have an error protocol error, expect=0x14, resp=0x20 when uploading sketch

I’m using 6 servos in the same time. I wrought simple script to control them and its worked properly couple times! In third time I got an error and really can’t understand what happened. I have no really big experiment to use arduino, actually its My first time… :confused: I some body already had similar problem or just can know what happened with My arduino I would be very grateful for your help!
Attached a screenshot of the error message

Do you have anything connected to pins 0 or 1? Disconnect before uploading if so.

What board are you using?