Fix NPE in key configuration, fixed tab completion

Added missing key mapping to prevent NullPointerException when no UUIDs are present in KeyStorage. Also adjusted tab completion logic in Key.java to handle cases with more than one argument.

src/main/java/com/alttd/playerutils/commands/playerutils_subcommands/Key.java

@@ -74,6 +74,9 @@ public class Key extends SubCommand {
 
     @Override
     public List<String> getTabComplete(CommandSender commandSender, String[] args) {
+        if (args.length > 1) {
+            return List.of();
+        }
         return Config.KEY.CRATES.keySet().stream().toList();
     }
 

src/main/java/com/alttd/playerutils/config/KeyStorage.java

@@ -49,6 +49,7 @@ public class KeyStorage extends AbstractConfig {
                 List<UUID> uuids = configurationSection.getKeys(false).stream().map(UUID::fromString).toList();
                 if (uuids.isEmpty()) {
                     config.logger.info(String.format("No keys yet for crate %s", crate));
+                    KEYS.put(crate, count);
                     continue;
                 }
                 for (UUID uuid : uuids) {