I want to use the debugger, but it's not working. Why has it forsaken me?!

There are a few requirements to make debugger work correctly:

• It only works with Google Chrome.
• The debugger cannot be used with static projects.  
• You need to be using Node 8.x or above; and it won't work if more than one Node process is running in parallel.
• Your project must have a .env file and use process.env.PORT rather than a hard-coded port number in the code.
• It also works best with pure javascript — source maps are not supported at the moment.