наводим марофет

src/main/java/app/entities/server/Server.java

@@ -49,6 +49,7 @@ public class Server {
         uniq.merge(key, count, (x,y) -> y);
     }
 
+    @JsonIgnore
     public InetSocketAddress getInetAddress() {
         String[] splitted_address = address.split(":", 2);
         return new InetSocketAddress(splitted_address[0], Integer.parseInt(splitted_address[1]));