My nothers two dwarf apple trees had fruit this year for the first time but the entire crop was ruined. Every apple had bumps on them and you can find tunnels throughout the apple. When you taste one you get a really bitter taste. It seems to effect the leaves as well turning them brown on their innermost veins. I have attached some pictures of the fruit but do not have a picture of any leaves. This is the first year we had apples on these trees but I made sure to pick up all the fruit around the tree and discard them. Please advise so that we can have a great crop next year!