Temple

HEy, just finnished my temple and been having fun in it.
few days ago after a run with killing architekt and placing royal access chamber, like always i place a room before the next rum when it asks. however when i placed my generator ( from a gathered medallion) a generator at the start, it didnt register as "a new room" and didnt let me start a new run, and i dont have any space to put another room so its stuck like this.