hotfix: add missing exit() call when failing to fetch network resource

labs/2/Main.java

@@ -90,6 +90,7 @@ public class Main {
             }
         } catch (Exception e) {
             System.out.println("[ERROR] Failed to fetch resource " + output_filename + "from " + remote_url + " due to the following exception: " + e);
+            System.exit(1);
         }
     }