They want him to start singing songs alone without including Fabrika. Also, The guy on the left side told Bima that he has few issues and they are in him. He is stubborn and not always flexable. However, Dima was explaning the fact what that guy said about him. He is not flexable sometimes when he sings and somewhat stubborn to it too. He just admits these qualities. So, he needs to fight over them and learn from his mistakes. And of course be better for his solo music.