502 bad gateway nginx | .NET location: /usr/share/dotnet No frameworks were found

You must install or update .NET to run this application.

Architecture: x64

Framework: ‘Microsoft.AspNetCore.App’, version ‘8.0.0’ (x64)

.NET location: /usr/share/dotnet No frameworks were found.

Learn about framework resolution:

https://aka.ms/dotnet/app-launch-failed

Solution:

Steps1:

sudo apt remove dotnet*

sudo apt remove aspnetcore*

sudo apt remove netstandard*

sudo rm /etc/apt/sources.list.d/microsoft-prod.list

sudo apt update

sudo apt install dotnet-sdk-8.0

Step2:

1.First, add Microsoft’s package signing key to your list of trusted keys and add the package repository:

wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb

sudo dpkg -i packages-microsoft-prod.deb

2.Install the .NET SDK (which includes the runtime and frameworks):

sudo apt-get update

sudo apt-get install -y dotnet-sdk-8.0

NET 8 runtime is available, here’s how you can install it:

3.Add Microsoft’s package repository if you haven’t already:

wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb

sudo dpkg -i packages-microsoft-prod.deb

4.Install the .NET runtime:

sudo apt-get update

sudo apt-get install -y dotnet-runtime-8.0

dotnet –list-runtimes

dotnet –list-sdks

//Check the app runing logs:

sudo journalctl -u your-app.service -b