Recreational Vehicle Lpg Tank Valve/gauge problems of the 2014 Ford Fusion

While driving on a freeway, my 2014 Ford Fusion 2. 0l ecoboost starts to overheat. While trying to press the gas pedal to increase the speed, the car takes a while to increase the speed and at the same time the temparature gauge is going up as well until I get the overheating notification on my car. I had to slow down my driving on the freeway while there were cars behind me. I had to get out of the freeway and exited on the first exit I see. I stopped on a curb of a street and opened the hood of the car to check what is wrong with it and I saw that there are coolant all over my engine and that my coolant level was empty even though I filled it up about 2 weeks ago. I had to refill my coolant a little bit more than the max level. I tried my best to drive back home carefully and just took the streets. I check the coolant level about 4-5 miles later and noticed that the coolant level went down a about 1/4 of an inch below the max level. The overheating started to happen when the temperature started to rise up over 100 degrees but it was the first time today(08/25/2020) that it splattered coolant all over my engine. There was also no check engine light on.