1.14 Files | Some material enums were changed in 1.14. Some files have been corrected and some have been migrated to a 1.14 only folder. The file "minesweeper.yml" has been added to the "1.13+..." folder and the file "nameit.yml" has been moved to a "1.14" folder.
For 1.13: Add the minesweeper.yml file to your game configurations folder to update it.
For 1.14: Do the step above as well as replace nameit.yml with the one found in the 1.14 folder in the zip.