Thanks for your reply
Have not created any module, only I am creating category as I used to create category earlier. I have also checked in the database but there is only one entry showing the new category. I also checked in the logs that no error is coming and even after debugging there is no error.
I also checked by doing in base theme of Prestashop but even that is not solving the issue. also checked by disabling those which are not prestashop's modules and also checked by disabling overrides but the issue is not getting resolved.
I tried to find in the database what I found that not one, two and three entries are being created in our category shop table.
Plz help me to resolved the issue.
Thanks