I am trying to get the customer related data in product details page as an API response and its working fine. But when I open the product view page in admin, I am getting the below error. I checked the mentioned customer id from the error in my database but its not there so I assume that it was deleted. Now, I need to resolve this and tried multiple solutions which are provided by Magento experts over stack exchange and other forums. But none of the solutions worked for me.
Can anyone please give me a suggestion or solution for this issue?
Any help will be appreciated.
Thank you.