I'm having a weird lighting bug on my block where it appears dark

Block file:

package com.derpz.nukaisles.block.custom;

import javax.annotation.Nullable;

import com.derpz.nukaisles.item.ModItems;
import com.derpz.nukaisles.item.custom.NukaColaItem;
import net.minecraft.nbt.CompoundTag;
import net.minecraft.world.item.ItemStack;
import org.jetbrains.annotations.NotNull;

import com.derpz.nukaisles.block.entity.ModBlockEntities;
import com.derpz.nukaisles.block.entity.NukaColaMachineBlockEntity;

import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.world.InteractionHand;
import net.minecraft.world.InteractionResult;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.context.BlockPlaceContext;
import net.minecraft.world.level.BlockGetter;
import net.minecraft.world.level.Level;
import net.minecraft.world.level.block.BaseEntityBlock;
import net.minecraft.world.level.block.Block;
import net.minecraft.world.level.block.Mirror;
import net.minecraft.world.level.block.RenderShape;
import net.minecraft.world.level.block.Rotation;
import net.minecraft.world.level.block.entity.BlockEntity;
import net.minecraft.world.level.block.entity.BlockEntityTicker;
import net.minecraft.world.level.block.entity.BlockEntityType;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.block.state.StateDefinition;
import net.minecraft.world.level.block.state.properties.BlockStateProperties;
import net.minecraft.world.level.block.state.properties.DirectionProperty;
import net.minecraft.world.phys.BlockHitResult;
import net.minecraft.world.phys.shapes.CollisionContext;
import net.minecraft.world.phys.shapes.VoxelShape;
import net.minecraftforge.network.NetworkHooks;

public class NukaColaMachineBlock extends BaseEntityBlock {

    public static final DirectionProperty FACING = BlockStateProperties.HORIZONTAL_FACING;

    public NukaColaMachineBlock(Properties properties) {
        super(properties);
    }

    private static final VoxelShape SHAPE = Block.box(0, 0, 0, 16, 32, 16);

    @Override
    public @NotNull VoxelShape getShape(@NotNull BlockState pState, @NotNull BlockGetter pBlock, @NotNull BlockPos pPos, @NotNull CollisionContext pContext) {
        return SHAPE;
    }

    //getStateForPlacement
    @Override
    public BlockState getStateForPlacement(BlockPlaceContext context) {
        return this.defaultBlockState().setValue(FACING, context.getHorizontalDirection().getOpposite());
    }
    //rotate
    @Override
    public @NotNull BlockState rotate(BlockState state, Rotation rotation) {
        return state.setValue(FACING, rotation.rotate(state.getValue(FACING)));
    }

    //mirror
    @Override
    public @NotNull BlockState mirror(BlockState state, Mirror mirror) {
        return state.rotate(mirror.getRotation(state.getValue(FACING)));
    }

    @Override
    protected void createBlockStateDefinition(StateDefinition.Builder<Block, BlockState> builder) {
        builder.add(FACING);
    }


    @Override
    public @NotNull RenderShape getRenderShape(@NotNull BlockState pState) {
        return RenderShape.MODEL;
    }

    @Override
    public void onRemove(BlockState pState, @NotNull Level pLevel, @NotNull BlockPos pPos, BlockState pNewState, boolean pIsMoving) {
        if (pState.getBlock() != pNewState.getBlock()) {
            BlockEntity blockEntity = pLevel.getBlockEntity(pPos);
            if (blockEntity instanceof NukaColaMachineBlockEntity) {
                ((NukaColaMachineBlockEntity) blockEntity).drops();
            }

            super.onRemove(pState, pLevel, pPos, pNewState, pIsMoving);
        }
    }

    @Override
    public @NotNull InteractionResult use(@NotNull BlockState pState, Level pLevel, @NotNull BlockPos pPos, @NotNull Player pPlayer, @NotNull InteractionHand pHand, @NotNull BlockHitResult pHit) {
        if (!pLevel.isClientSide) {
            BlockEntity blockEntity = pLevel.getBlockEntity(pPos);
            if (blockEntity instanceof NukaColaMachineBlockEntity NukaColaMachineBlockEntity) {
                ServerPlayer serverPlayer = (ServerPlayer) pPlayer;
                NetworkHooks.openScreen(serverPlayer, NukaColaMachineBlockEntity, pPos);
            }
            if (pPlayer.isCrouching() && pPlayer.getMainHandItem().getItem() instanceof NukaColaItem)  {
                System.out.println("test");
                pPlayer.getInventory().add(new ItemStack(ModItems.BOTTLE_CAP.get()));
                pPlayer.getInventory().removeItem(pPlayer.getInventory().selected, 1);
                pPlayer.getInventory().getItem(pPlayer.getInventory().selected).addTagElement("de-capped", new CompoundTag());
            }
            return InteractionResult.CONSUME;
        }
        return InteractionResult.SUCCESS;
    }

    @Override
    @Nullable
    public BlockEntity newBlockEntity(@NotNull BlockPos pPos, @NotNull BlockState pState) {
        return new NukaColaMachineBlockEntity(pPos, pState);
    }

    @Nullable
    @Override
    public <T extends BlockEntity> BlockEntityTicker<T> getTicker(@NotNull Level pLevel, @NotNull BlockState pState, @NotNull BlockEntityType<T> pType) {
        return createTickerHelper(pType, ModBlockEntities.NUKA_COLA_MACHINE.get(), NukaColaMachineBlockEntity::tick);
    }


}

Registration:
 

public static final RegistryObject<Block> NUKA_COLA_MACHINE = registerBlock("nuka_cola_machine",
                () -> new NukaColaMachineBlock(BlockBehaviour.Properties.of(Material.METAL)
                        .strength(5f).requiresCorrectToolForDrops().noOcclusion()));

 

i gave up on double-sized blocks. it looks good but then you place a dirt blocks next to it and urgh, things become very dark.

cut it up into two top and bottom parts.

11 minutes ago, MFMods said:

i gave up on double-sized blocks. it looks good but then you place a dirt blocks next to it and urgh, things become very dark.

cut it up into two top and bottom parts.

So make it work like the MC door?

yeah. i tried a lot harder than you did, trust me.

keep the big one you already made and use it for item model. make two copies, delete bottom portion in one, delete top portion in the other and translate upwards.