Hey guys trying to get comfortable with the Salesforce CLI, and went to deploy my code changes to my Dev Org but I keep getting the following error message. I checked out the link that they listed, but couldn't seem to figure out what issue was. I modified the JSON with the folder name that I'm trying to deploy, but still had no luck. 
 

Error deploying or retrieving source: The file or directory that you tried to deploy or retrieve isn't in a package directory that's specified in your sfdx-project.json file. Add this location to your "packageDirectories" value, or deploy or retrieve a different file or directory. For details about sfdx-project.json, see: https://developer.salesforce.com/docs/atlas.en-us.sfdx_dev.meta/sfdx_dev/sfdx_dev_ws_config.htm