Error handle filetree generation

src/main/java/app/controllers/FiletreeController.java

@@ -20,6 +20,7 @@ import app.events.OpenFileEvent;
 import app.events.OpenProjectEvent;
 import app.events.SaveFileEvent;
 import app.model.Model;
+import app.service.DialogBoxes;
 import app.service.FiletreeOperations;
 import javafx.fxml.Initializable;
 
@@ -56,9 +57,17 @@ public class FiletreeController implements Initializable, Controller {
     filetree.setShowRoot(false);
     File fileInputChosen = new File(inputChosen);
 
-    FiletreeOperations.generateTree(fileInputChosen, root);
+    try {
+      FiletreeOperations.generateTree(fileInputChosen, root);
 
-    filetree.setRoot(root);
+      filetree.setRoot(root);
+    } catch (Exception e) {
+      Model.setProjectPath(Optional.empty());
+      DialogBoxes.showErrorMessage(
+        "Could not open folder.\n\n"
+        + "Do you have the right permissions for this folder?\n"
+        + "Or does the folder contain any shortcut to somewhere within itself?");
+    }
   }
 
   /* ------------------------------------------------------------------------ */

src/main/java/app/service/FileOperations.java

@@ -51,8 +51,7 @@ public class FileOperations {
       return true;
 
     } catch (FileNotFoundException ex) {
-      DialogBoxes.showErrorMessage("Could not save file!");
-      System.err.println(filepath);
+      DialogBoxes.showErrorMessage("Could not save file at \n" + filepath.toString());
       return false;
     }
   }