fix error when prestige is disabled

src/main/java/sh/okx/rankup/messages/MessageBuilder.java

@@ -39,7 +39,7 @@ public class MessageBuilder {
   }
 
   public MessageBuilder replaceFirstPrestige(Rank rank, Prestiges prestiges, String with) {
-     if(prestiges.getFirst().equals(rank)) {
+     if(prestiges != null && prestiges.getFirst().equals(rank)) {
        replace(Variable.OLD_RANK, with);
        replace(Variable.OLD_RANK_NAME, with);
      }

src/main/resources/plugin.yml

@@ -1,5 +1,5 @@
 name: Rankup
-version: 3.0.1
+version: 3.0.2
 main: sh.okx.rankup.Rankup
 author: Okx
 depend: [Vault]