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Hello, dear shivalisharma.

I want to mention, that we need more information for further investigation of this case.
So, please provide us with the following info:

Please, send us a link, where the given gallery is located.

Please can you tell me what type of gallery you are using?

Customer satisfaction is our priority and we do our best to make your experience even better.

Looking forward to hearing from you.

Thank you very much.