UAE and Turkey... Promising relations?

Crown Prince of the Emirate of Abu Dhabi Mohamed bin Zayed al Nahyan (MBZ) was in Turkey on 24 November. After this visit, it was stated that a new era promising development has begun in the tense relations between the two countries that have been going on for years and it was emphasized that new horizons were formed for cooperation and joint work. So, what were the reasons for the tensions between Turkey and the UAE, and what has changed now?