Hello Peter,
The first error is not related to the module, you must be either running something else against 8080 (Perhaps another local environment) or your computer simply registers as such.
You can try a restart or you can change the port in the project settings under configurations, open your current configuration, navigate to the server tab and you should now see your config. The alternative is running in a sandbox.
As far as the import module and MxReflection go, you need to sync MxReflection on the modules you need to use, then you need to configure an import template, and only then you can add a file for import.
Hope this helps