Azure linux app service + .netcore 3.1 application error

Arnold Si 1

Hello,
I developed .netcore 3.1 application and tried to deploy it using visual studio 2019.
I've created app service in azure:

But when I publish the app I'm getting application error page (azure error page).

I went to bash and saw that .netcore that installed on the machine is 2.2 and not 3.1 although I selected 3.1:

This is what I see in diagnostics:

I even tried self contained app and still not working.

ajkuma 22,521 Reputation points Microsoft Employee

2020-06-17T13:38:16.37+00:00

Apologies for the delay in responding here. I was checking on this internally and noticed you had also filed a support ticket ending with '10323'.

To benefit the community, posting the solution that worked for you - the Issue was due to app couldn't connect to SQL server.

Apologies for any inconvenience with this issue, thanks for sharing the update.

If you have any further questions, kindly let us know we would be more than happy to assist you.

Thanks again for your patience and co-operation!
ajkuma 22,521 Reputation points Microsoft Employee

2020-06-17T13:41:25.457+00:00

I have reached out to you offline further discussion. Just adding useful Azure deployment troubleshooting resource:

App startup errors and Troubleshoot on Azure App Service - Provides common causes and steps to resolve issues.

Configure a Linux ASP.NET Core app for Azure App Service - Configuration and diagnostic logs.

Azure App Service on Linux FAQ

Apologies for any inconvenience with this issue, thanks for sharing the update.
If you have any further questions, please do let us know.