This indicates the game cannot find the asset files. Verify that the folder com.wb.goog.mkx is placed inside Android/obb/ and contains the .obb file, not another nested folder.
If you need help setting up the game files, please let me know: What your device runs Mortal Kombat X V2.1.1 Mod APK OBB -Latest-
To run a game as graphically intense as Mortal Kombat X—which supports 1080p at 60fps—a simple APK file isn't enough. The OBB (Opaque Binary Blob) This indicates the game cannot find the asset files