"The requested page cannot be accessed because the related configuration data for the page is invalid." with RC3

Hi everyone!

I'm getting the error in subject after upgrading RC2->RC3 branch. This only appears on IIS Express.

Azure only shows blank page, but I assume same is happening there.

If I run the project via dotnet run it works just fine.

I think it has something to do with web.config:

<?xml version="1.0" encoding="utf-8"?><configuration><system.webServer><handlers><add name="aspNetCore" path="*" verb="*"
              modules="AspNetCoreModule" resourceType="Unspecified"/></handlers><aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%"
        stdoutLogEnabled="false" stdoutLogFile="..\logs\stdout"
        forwardWindowsAuthToken="false"/></system.webServer></configuration>

What should I do so I could get it working on Azure again?