Unkn0wn 3rr0r

Everything was okay. We had a nice little farm, a cool secret base, and more. We had diamonds. It was all good. And then it happened. Nobody was on the server. It was just me. I was mining. I found some diamonds and a really cool ravine. I found a block of emerald ore, which is really rare. So I took my Silk Touch pick and kept it in my house as a trophy. My friend came on the server and saw it and became jealous. He tried to mine it, but I went into creative and used barriers.