The left warehouse has 3642 out of a possible 1500 instorage. The right warehouse is empty.
because you have stuff UNCHECKED. so there is no where to store the stuff in your town.
Only uncheck items if you have at least 1 other place to store that item.
the storage building itself has space but you have food and raw items unchecked
so when that stuff shows up there is no place to put it because you are not allowing
it in yor only storage area even though the building itself has space.
I wish the error dialog showed WHAT ITEM was having trouble it would make
it so much more easier see just what is happening.