Technically harmless.
It's hyper flashing since the electrical draw of the les is so low, your relay is reading it as a dead bulb and the computer hyper flashes it to make you aware.
You can either get a resistor or a new relay. Tst industries has a good relay. (Not sponsored by them in any way.)
This helped me understand the issue:
http://youtu.be/5tlQfg_Ap8I