Front and main beam suddenly out.

Hello to me, as described in the title, the front light and the main light turned out, I didn’t notice until I came home from a party at 11 pm. That was dark I tell you. Model Ford Escort Kombi Ghia BJ 96 Maybe one of you can help me with what this is about. So I checked all the fuses and bulbs and they are all OK. Only on the light cable in the front light no current arrives when I press the rotary switch. Other lights (inside room, stable t etc. ). The beep noise when switching on the light also comes. Just as I said no fron light and driving light. Must say that I had my tire track set in a workshop the day before. The light still worked. Did they maybe cut a cable from the alternator? Is that possible? Hope on help. MFG Marcus