I am fairly new to kegging & the first two times I did not have problems. Yesterday I did something different and filled the keg and sealed it and hooked the gas line up but did not turn on the gas. Then i put it all in the refrigerator to get it to a cooler temperature. This morning I see that there's gas in the line but it did not make it up to the regulator. Please advise on what I did wrong and suggestions on what to do next. Thanks.