JAVA file is not a valid java model

There was A LOT of error like this, but no one could help me :<

Here's my code:

public class :)<T extends Entity> extends EntityModel<T> {
    
    public static final ModelLayerLocation LAYER_LOCATION = new ModelLayerLocation(new ResourceLocation("modid", ":)"), "main");
    private final ModelPart bone;
    public :)(ModelPart root) {
        this.bone = root.getChild("bone");
    }

    public static LayerDefinition createBodyLayer() {
        MeshDefinition meshdefinition = new MeshDefinition();
        PartDefinition partdefinition = meshdefinition.getRoot();

        PartDefinition bone = partdefinition.addOrReplaceChild("bone", CubeListBuilder.create().texOffs(0, 32).addBox(-9.0F, -10.0F, 4.0F, 4.0F, 10.0F, 4.0F, new CubeDeformation(0.0F))
        .texOffs(16, 39).addBox(-9.0F, -10.0F, 8.0F, 4.0F, 10.0F, 4.0F, new CubeDeformation(0.0F))
        .texOffs(0, 0).addBox(-9.0F, -22.0F, 4.0F, 4.0F, 12.0F, 8.0F, new CubeDeformation(0.0F))
        .texOffs(24, 7).addBox(-9.0F, -22.0F, 12.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.0F))
        .texOffs(24, 23).addBox(-9.0F, -22.0F, 0.0F, 4.0F, 12.0F, 4.0F, new CubeDeformation(0.0F))
        .texOffs(0, 20).addBox(-10.0F, -28.0F, 5.0F, 6.0F, 6.0F, 6.0F, new CubeDeformation(0.0F))
        .texOffs(24, 0).addBox(-10.0F, -28.0F, 5.0F, 7.0F, 1.0F, 6.0F, new CubeDeformation(0.0F))
        .texOffs(32, 39).addBox(-5.0F, -30.0F, 5.0F, 1.0F, 2.0F, 6.0F, new CubeDeformation(0.0F)), PartPose.offset(8.0F, 24.0F, -8.0F));

        return LayerDefinition.create(meshdefinition, 64, 64);
    }

    @Override
    public void setupAnim(Entity entity, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch) {

    }

    @Override
    public void renderToBuffer(PoseStack poseStack, VertexConsumer vertexConsumer, int packedLight, int packedOverlay, float red, float green, float blue, float alpha) {
        bone.render(poseStack, vertexConsumer, packedLight, packedOverlay, red, green, blue, alpha);
    }
}

Help me plss