Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
I migrated site from Magento version 18.104.22.168 to Magento version 2.3.1 afterwards when I open all product shows 404 page not found error in front-end
I have to fetch the same issue so Please, a check-In Database View is created or not If a View is not there so create view after indexing and flush...
may your issue resolve...
I had this issue and what fixed it for me was fixing the images, because they got corrupted in the migration.
Required, but never shown