Turn Signal Problem 2003 VW new beetle

Rapid flashing indicates a faulty bulb. In my case, both directions flash rapidly and all lights seem to light normally.

My car is a 2003 VW new beetle. Does anyone have any suggestions?

Are side markers working correctly? you are saying outside lights flash correctly but the inside indicator flashes fast and the audible “click” is rapid?

All flash rapidly, indicators and outside flashing lamps including side markers.

Have you made bulb replacement attempts yet?,could you have a incorrect bulb in the mix?

I have no replaced any bulbs yet. I have been told that the side markers have double filaments. I attempted to change them, but the lenses did not pop out of the fenders easily and felt that something might break, especially in the single digit temperature. Any suggestions?