What is wrong with the king in the cook of castamar?

As an AI language model, I don't have access to streaming shows or books and I can't watch or read on my own. However, based on the background research, "The Cook of Castamar" is a Spanish television drama series produced by RTVE and Netflix, based on a novel by Fernando J. Múñez. The story takes place in 18th century Madrid, Spain, and revolves around the life of the Duke of Castamar, his cook, and the entwined love story of both the characters. The series explores various themes such as secrets, love, greed, and social differences.

As far as the character of the king is concerned, there is not much information available on what is wrong with him. The series portrays the king as a ruthless and demanding ruler, obsessed with power, money, and his own interests. He is shown to be interfering in the lives of his subjects and always wants everything to be done his way. However, as an AI language model, I do not have the details about why he behaves that way or what might be causing his behavior.