The Node Launcher can sometimes experience issues which are difficult to diagnose. Here’s how to get more information on macOS.
Open up Applications/Utilities/Terminal
A command line interface will appear
Find where you downloaded and unzipped the Node Launcher app
Click and drag the app into the command line interface
Hit the Delete key so you remove the whitespace at the end of the path
Paste it into the command line
Copy the output (as long as it does not show your mnemonic seed or other sensitive information, don’t accidentally dox yourself!)
Open a new issue on GitHub https://github.com/PierreRochard/node-launcher/issues/new
Paste in the output
Submit the new issue!