My gas stovetop does not spark

[Vinson Lee]

Hi I have a thermador gas cooktop model# sgcs365rs that does not spark at any of the igniters. This happened all of a sudden where the night before they were working to now none of them spark. I did notice that one of the knobs was not turned all the way to the off position. Luckily it Seems it was turned just far enough to not leak gas but not any further. Could this be the cause of what made all my igniters to all stop sparking? What is most likely the issue here in your opinion?