A large fight broke out early Friday morning at the Stadium Sports Bar and Grill in downtown Boston, prompting police to dispatch an emergency deployment team of about 150 officers, authorities said. The majority of the fight, which broke out around 1:20 a.m., occurred outside the bar at 148 State St., and police took around 45 minutes to break up the crowd and end the fight, Boston police spokeswoman Katherine Shea said. No arrests were made and no one required medical attention. The Stadium Sport Bar was issued a license-permit violation for the unruly patrons at the bar, Shea said. The bar’s managers were not immediately available for comment.