I know very little about the technical end of WordPress but I have 4 websites set up that use it. Yesterday morning I received a notice that my WordPress installations had been automatically updated. Two of the four websites are now indicating this same error, and I have not edited any of them in over a week. I don’t know enough to try and figure out what caused the two to crash while the other two stayed up and running. I am working with my host to install backups from their nightly backup.