Propane, and if picture is accurate the tank has 150lbs psi in the tank and the regulator is set for 0lbs psi output.
Is the main tank valve cracked open?
Has regulator been adjusted down, or adjusted improperly?
Crack open main (top) valve, open red (fuel) valve on tiny torch 1/8th a turn, check output preassure and adjust with brass t valve to 5lbs.
I should be in tonight around 5p to check it out.