An error while building

[MoonLGH]

C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:18: error: package net.ellerton.japng does not exist import net.ellerton.japng.Png; ^ C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:19: error: package net.ellerton.japng.argb8888 does not exist import net.ellerton.japng.argb8888.Argb8888Bitmap; ^ C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:20: error: package net.ellerton.japng.argb8888 does not exist import net.ellerton.japng.argb8888.Argb8888BitmapSequence; ^ C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:21: error: package net.ellerton.japng.argb8888.Argb8888BitmapSequence does not exist import net.ellerton.japng.argb8888.Argb8888BitmapSequence.Frame; ^ C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:22: error: package net.ellerton.japng.chunks does not exist import net.ellerton.japng.chunks.PngAnimationControl; ^ C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:32: error: cannot find symbol HashMap<Frame, Integer> frameTextureID; ^ symbol: class Frame location: class TextureApng C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:33: error: cannot find symbol List<Frame> frames; ^ symbol: class Frame location: class TextureApng C:\Users\HP\IdeaProjects\Custom-Main-Menu-MoonL\build\sources\main\java\lumien\custommainmenu\lib\textures\TextureApng.java:35: error: cannot find symbol PngAnimationControl animationControl; ^ symbol: class PngAnimationControl location: class TextureApng