HTTP Error 500.19

My first time trying to implement an ASP.NET Core Application to Hosted IIS Server.

There is a web.config and I believe the issue could have to do with a malformed XML Attribute of the web.config

<aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false"/>

%LAUNCHER_PATH% is a placeholder.

based on this information:  https://weblog.west-wind.com/posts/2016/Jun/06/Publishing-and-Running-ASPNET-Core-Applications-with-IIS
I changed the processPath="dotnet"   and   arguments=".\WebDevX1.dll"

However the web.config still shows an error with <aspNetCore>    http://imgur.com/a/yaDqr 

I haven't seen other examples of how to fix this.