hygena classic 910g will not light?

My hygena classic 910g in the middle of cooking lost gas supply to both grill and oven.

I left to cool down and tried to turn on both again. Fan works, no ignition spark or clicking noise. No gas coming through.

What do i need to do to fix, replace a fuse, hit a reset button. I have checked our fuse board and gas supply to house is okay.