Marta Kauffman has admitted ‘Friends’ bosses made a “mistake” by using the wrong pronouns to describe a transgender character. In the show, Chandler Bing’s parent is referred to as his “dad” despite identifying as a woman and executive producer Marta has insisted bosses on the show should have done better but errors were made due to a lack of understanding at the time. Speaking on BBC World Service, Marta said: “We kept referring to her (Chandler’s transgender parent) as ‘Chandler’s father’, even though Chandler’s father was trans. Pronouns were not yet something that I understood. So we didn’…