Why is my gas oven no longer heating?
I've had that happen on my double oven Viking range. The igniter would glow, but not draw enough current to convince the gas valve to open. One oven had two igniters the other smaller oven had one.  All of them eventually failed.  I found higher quality after-market igniters and they have been working fine for many years now, lasting longer than the OEM ones.
Not sure if this applies to you, but it's close.