Minecraft Forums

I set this up in order to automatically get rid of unwanted items for me. To get the lava in place I stood on the dropper before placing the hopper and chest, dug out a block and placed the lava there without picking up the dropped stone block. Now for some reason the lava keeps hissing as if an item has been dropped into it, and the sound effect continues even if I remove the lava and put a block in its place. How can I fix this?