Blame a class when the childHandler doesn't inject

src/main/java/us/myles/ViaVersion/ViaVersionPlugin.java

@@ -87,9 +87,15 @@ public class ViaVersionPlugin extends JavaPlugin implements ViaVersionAPI {
                         ChannelFuture future = (ChannelFuture) o;
                         ChannelPipeline pipeline = future.channel().pipeline();
                         ChannelHandler bootstrapAcceptor = pipeline.first();
+                        try {
                             ChannelInitializer<SocketChannel> oldInit = ReflectionUtil.get(bootstrapAcceptor, "childHandler", ChannelInitializer.class);
                             ChannelInitializer newInit = new ViaVersionInitializer(oldInit);
+
                             ReflectionUtil.set(bootstrapAcceptor, "childHandler", newInit);
+                        } catch (NoSuchFieldException e) {
+                            // field not found
+                            throw new Exception("Unable to find childHandler, blame " + bootstrapAcceptor.getClass().getName());
+                        }
                         injected = true;
                     } else {
                         break; // not the right list.