fix nulls

1 files changed, 2 insertions, 1 deletions

diff --git a/src/main/java/design/controller/userinput/menus/ImportExportMenu.java b/src/main/java/design/controller/userinput/menus/ImportExportMenu.java
index dda465f..21ffa6c 100644
--- a/src/main/java/design/controller/userinput/menus/ImportExportMenu.java
+++ b/src/main/java/design/controller/userinput/menus/ImportExportMenu.java
@@ -56,6 +56,7 @@ public class ImportExportMenu extends Menu {
             case "xml" -> handler = new XMLHandler(source);
             default -> {
                 System.out.println("Unsupported file type: " + ext);
+                this.present();
                 return;
             }
         }
@@ -75,6 +76,6 @@ public class ImportExportMenu extends Menu {
 
     private static String getExtension(String fileName) {
         int i = fileName.lastIndexOf('.');
-        return (i >= 0) ? fileName.substring(i + 1).toLowerCase() : "";
+        return (i >= 0) ? fileName.substring(i + 1).toLowerCase() : "unknown";
     }
 }