Add catching for invalid file input

edit_data_form.py

@@ -80,6 +80,10 @@ def main(*_args):
             filesList.sort()
             file_path = os.path.join(file_path, filesList[len(filesList) - 1])
 
+        else:
+            print("Please enter a valid json file or the directory containing the json file!")
+            sys.exit(0)
+
     else:
         file_path = pathlib.Path(pathlib.Path(__file__).absolute().parent, 'example.json')