When custom files are found, use the base files for default values.

worldedit-core/src/main/java/com/sk89q/worldedit/command/BiomeCommands.java

@@ -106,7 +106,7 @@ public class BiomeCommands {
                             })
                             .collect(Collectors.toList()));
              return paginationBox.create(page);
-        }, null);
+        }, (Component) null);
     }
 
     @Command(