I have minecraft for Windows 10. Last night worked on my world. This morning it tells me that it cannot load due to "A newer version of the game saved this level"

I worked last night on a new world. (not server) on my Windows 10 game.  This morning it won't load saying it was saved  under a newer version of the game. This is infuriating as I have hours of work that I will be loosing.  I have the 1.14 update