“Friends” co-creator Marta Kauffman has admitted it was wrong to misgender the transgender parent of one of the show’s main characters. The massively successful sitcom about six white friends living in Manhattan in the late ‘90s and early 2000s captured the attention of viewers from all over the world. The show, which ended its 10-season run in 2004, won six Emmys but it also had its share of problematic portrayals of minorities. In an upcoming interview with BBC World Service, Kauffman addressed an issue the show had when portraying a transgender character. In the show, Chandler Bing (Matthew…