The neighbours are at odds over various issues, primarily the 1915 mass killings of 1.5 million Armenians.
source https://www.aljazeera.com/news/2022/1/14/turkey-armenia-talk-normalising-ties-after-decades-of-animosity
source https://www.aljazeera.com/news/2022/1/14/turkey-armenia-talk-normalising-ties-after-decades-of-animosity