This sanction was given because England supporters made a fuss at Wembley Stadium. In the match against Italy, England fans who did not have tickets fought with police and officers to force their way into the stadium.
After a three-month investigation, the UEFA Disciplinary Committee found the England fan's behavior troubling. In addition to banning one game without spectators, England may receive a second additional sanction.
The sanction is in the form of holding matches without spectators with a probationary period valid for two years. UEFA cited the lack of order and discipline in and around the stadium as a strong reason.