You may not have positioned the various valves appropriately and ended up pumping the antifreeze into your FW tank or hot water tank. Check your owner's manual for the correct valve positions. The valves if like my 2018 Eagle HT will be located near the pump and hot water heater.
I had problem with this just this weekend...I had hose hooked up to city water outlet...other end in the bucket of antifreeze...turned pump on...and nothing was pumping...got on jayco forum...it said to take the screen on the city water connection out and put it back in backwards...I did this and turned pump back on ...and it started pumping...pink was flowing.. oh happy day....2019 jayco pinnacle
If you have a unidock, I suspect you filled the fw tank. Otherwise if you have a water heater tank, the valves where miss aligned and you filled the tank. No big deal that a 5 gallon bucket cant handle.