Error: Comments are not permitted in JSON

 

You can fix this with the files.associations setting in VSCode. 

In VS Code open Settings in JSON view by using the Command Pallet (Cmd + Shift + P) and enter Preferences: Open Settings (JSON). Next, you can add this setting on workspace (you need to add it for each project) or user (add it once, works for all projects) level.

"files.associations": {

    "*.json": "jsonc"

}