AR ONE leak behind toilet question

Thanks for the response pld33270! After tightening the connection I figured it was fixed. Two days ago I filled the holding tank with water and turned on the pump and it was leaking like crazy from the black piece right above the connection. Needless to say I'm waiting for a new water module to arrive today from Amazon. The previous owner winterized the TT but didn't realize water stayed in the supply line all the way up to the tank and it cracked over the winter. Here's a pic of where the crack is located.