It needs it again so I followed the booklet instructions to lock out the gas.
the prompt 'LOC' flashes. (The oven door is shut and oven light is off.)
next I pressed the 'self clean' button but nothing happened, no beep, nothing, so I wasn't able to set the cleaning time. the "LOC' kept flashing.

fortunately I was able to cancel the gas lockout so the stovetop burners do work. I don't want to try it again in case I end up with nothing working due to a faulty electronic panel.
anyone knowledgeable about what the problem could be? Many thanks!

Have you checked the latch to see if the oven isn't closing securely and that is possibly the culprit? By the way, mine does not say I need to "lock out" the gas before starting my self clean cycle. What model number is yours? I wonder why yours would tell you that you have to manually lock out the gas when mine doesn't need to do that. IOW, whatever my repairman did, I won't have to do that each time I use the self clean cycle. It was some sort of factory setting that should have been done during installation.

I had actually read in a couple of reviews that people had problems with the self clean feature so that is what prompted me to try using it last month. I was nearly out of warranty so wanted to make sure that it was working b/f the warranty ran out.

I wish I had better advice! Good luck.