Despite the fact that I had a repairman replace the igniter approximately 1 year earlier, it appears my igniter broke again. I was worried that the problem was something else, but apparently it was the igniter.
Since it seems this may be a part which is going to fail frequently, I decided to try to replace it myself. It ended up not being that hard. The video on appliance parts pros is very helpful. I had some trouble getting the door back on, but eventually prevailed.
Fix took me less than 2 hours. Probably could be done in 30 mins or less by someone with more experience.