Hold on, if we are taking credit I was way ahead of @yodeli and @Minxy Girl
Not important who gets the credit, what's important is the offers of help on this Forum
Lack of gas pressure?
Warm the regulator with hot towel in case of moisture icing?
Try a different cylinder?
Good luck
UPDATE
The in a break I switched to gas and fired it up.
it went through the normal cycle routine and fired perfectly.
My guess is Minxy was right
The gas regulator in the gas locker was probably frozen
Not important who gets the credit, what's important is the offers of help on this Forum