Make Sure If the back of the oven has a T-Fitting and if the gas line as 2 entry points. One of the shut valve could of shut off or if it is a safety Yellow line it has a built in Emergency shut off valve(internal on the gas Line)

I have only seen one gas line going in on a stove top but as for a double I would think that there is a T-Fitting.
Your Manual we specify too if the inside as a Emergency cut off (reset)

Caution: do not turn on the burner if it does not light make sure to smell for gas leak

Thank You

Check circuit breaker. Check control for proper setting.
Allow no more than 40–60 seconds before burner ignites and
flame is seen. If burner does not ignite, press OVEN CANCEL.
If burner repeatedly fails to ignite within 40–60 seconds then you need to contact service person......


Good luck..

When this happens it is usually because of a faulty flame/gas safety valve.