@just_rajpoot
Your gallery uses the following path as the configUrl:
\u002Fjuicebox\u002Fxml\u002Ffield\u002Fnode\u002F5\u002Ffield_images\u002Ffull?checksum=29afd68ddaea7f5502f4ddc91480b713
This first thing I notice is that backslashes are being used instead of regular forward slashes.
However, even if the backslashes are changed to forward slashes, going to that location on your web server (which should display the XML data for the gallery), results in an error 404 (file not found).
The structure of the gallery and the path for the configUrl are generated by the Drupal module.
We did not write the Juicebox module for Drupal ourselves and, as such, any queries relating directly to the module would be better directed towards the Drupal forum where the author of the module (who will be more familiar with both Drupal and the module itself) should be able to help you out further: https://www.drupal.org/forum
(The Juicebox module for Drupal is an unofficial plugin but is well supported by its author on the Drupal forum.)
I realise that this does not solve your problem but it should hopefully point you in the right direction.