Here is what you are trying to do ...

When you get to the products for that category, if you use the Prev/Next you will find products that kill the product _info page ...

Try doing this ... instead of deleting each product that kills the page, look in the URL for the products_id and just set the products_status to OFF/Out of stock ...

You can do this in the Admin by clicking the green icon to switch it to red ...

Once you can get through the category without an error on the category listing and/or the product _info navigating with the prev/next then you have the Products causing this issue and can look further into them to see what it is about them that is causing this problem ...

Something about these few products is generating an error on the display and killing the page ...

It might be something that you can edit or just fix by remaking the product and deleting the old one ...