The following modules are missing or built with a different engine version?

I’m currently have been working on a game in UE 4.19. I started the game in this version and haven’t used any other version. This morning when I started it up to work on it I got a pop up that reads “The following modules are missing or built with a different engine version: UE4Editor-horrorgame.dll Would you like to rebuild them now?” I hit yes and it starts the repair when it fails and then it reads “horrorgame could not be complied. Try rebuilding from source manually.” What am I supposed to do to fix this?

Hello,

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Thanks