Spills are what kill igniter electrodes on a pro range. Liquid gets into the ceramic, carbon builds on the tip, and the spark jumps to the nearest piece of metal instead of the gas. You hear clicking and get nothing, or the burner lights on the fifth try and not the first.
We clean and gap the electrodes, check continuity back to the spark module, and test the gas valve solenoid on dual fuel models where the ignition and the gas are controlled separately. If the module is firing on every electrode except one, the fault is at that burner. If nothing is firing, it is the module or its supply. Gas work here needs a gas ticket, and ours is covered by licence BC30591. More on stove and cooktop repair.