error handling in the open function

src/ui/app.py

@@ -90,7 +90,12 @@ class AppUI(App):
                 def callback(path: str):
                     if path == None: return
                     
-                    self.project = Project.from_file(path)
+                    try:
+                        self.project = Project.from_file(path)
+                    except Exception as e:
+                        self.notify(str(e), title="Failed to open project", severity="error")
+                        return
+                        
                     self.open_project_path = path
                     
                     ### load all the ui elements