HTTP Error 500.35 - ANCM Multiple In-Process Applications in same Process

I hosted a .NET CORE 3.0(razor pages) application which was running fine after few days for no reason it was just displaying HTTP Error 500.35 - ANCM Multiple In-Process Applications in same Process Common solutions to this issue: Select a different application pool to create another in-process application., then I found this solution HTTP Error 500.35 - ANCM Multiple In-Process Applications in same Process that fixed it by deleting .vs Folder, On Saturday morning I downloaded the new visual studio update 16.6.0. This morning the application running on the server started showing the same error, without any changes to the it, I followed the same step I used to fix it earlier but still didn't fix it, please is there any other solution to fix this? Because right now everything is working fine in my local machine. Thanks in advance.