the Yerushalmi, or Talmud of the Land of Israel, was compiled some time in the early to mid fifth century. It was after Theodisius II ended the office of Nasi, and possibly also ending semicha, which pretty much put an end to Israel as a major center of Jewish thought and teaching.
It seems strange that Jerusalem is hardly mentioned at all in the Yerushalmi, though perhaps not all that surprising since the city had by then become a Christian city. Constantine’s mother, Helena, destroyed the temple of Venus and they began building the Church of the Holy Sepulcher. Jews were banned from Jerusalem (except for Tisha B’Av when Jews were permitted to enter the city).