The following pathes can not be found when loading the mod:
./prototypes/entity.lua: filename = "iper-belt/graphics/entity/express-splitter/hr-express-splitter-north.png",
./prototypes/entity.lua: filename = "iper-belt/graphics/entity/express-splitter/hr-express-splitter-east.png",
./prototypes/entity.lua: filename = "iper-belt/graphics/entity/express-splitter/hr-express-splitter-south.png",
./prototypes/entity.lua: filename = "iper-belt/graphics/entity/express-splitter/hr-express-splitter-west.png",
./prototypes/entity.lua: filename = "iper-belt/graphics/entity/express-splitter/hr-express-splitter-east-top_patch.png",
./prototypes/entity.lua: filename = "iper-belt/graphics/entity/express-splitter/hr-express-splitter-west-top_patch.png",
