TypeError: Converting circular structure to JSON

[ErisDS]

Hi there 👋

I'm following a tutorial trying to get to grips with adonis, and I've run into an error:

(node:17323) UnhandledPromiseRejectionWarning: TypeError: Converting circular structure to JSON
    --> starting at object with constructor 'Socket'
    |     property 'parser' -> object with constructor 'HTTPParser'
    --- property 'socket' closes the circle
    at JSON.stringify (<anonymous>)
    at Object.Emittery.debug.logger (/Users/hannah/Sites/node-frameworks/adonis-test/node_modules/emittery/index.js:219:22)
    at Emittery.logIfDebugEnabled (/Users/hannah/Sites/node-frameworks/adonis-test/node_modules/emittery/index.js:234:15)
    at Emittery.emit (/Users/hannah/Sites/node-frameworks/adonis-test/node_modules/emittery/index.js:293:8)
    at Emitter.emit (/Users/hannah/Sites/node-frameworks/adonis-test/node_modules/@adonisjs/events/build/src/Emitter/index.js:104:41)
    at OATGuard.login (/Users/hannah/Sites/node-frameworks/adonis-test/node_modules/@adonisjs/auth/build/src/Guards/Oat/index.js:260:22)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
    at AuthController.login (/Users/hannah/Sites/node-frameworks/adonis-test/app/Controllers/Http/AuthController.ts:20:21)
    at Object.PreCompiler.runRouteHandler [as fn] (/Users/hannah/Sites/node-frameworks/adonis-test/node_modules/@adonisjs/http-server/build/src/Server/PreCompiler/index.js:47:31)
    at SilentAuthMiddleware.handle (/Users/hannah/Sites/node-frameworks/adonis-test/app/Middleware/SilentAuth.ts:19:5)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:17323) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 3)
(node:17323) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

I've installed auth, configured it, and then tried to use it in a controller like this:

public async login({ request, auth, logger }: HttpContextContract) {
    const { email, password } = request.all()

    try {
      const token = await auth.attempt(email, password)

      return token
    } catch (error) {
      logger.error(error)
      return 'Could not verify credentials'
    }
  }

The offending line 20 is this one:

const token = await auth.attempt(email, password)

In app.ts I have

forceContentNegotiationTo: 'application/json',

I'm sure I've missed something daft - any clues?

[ErisDS]

Ok so this just went away on its own after restarting. Everything is telling me to use node ace serve --watch whilst I'm developing, so I'm not clear in what circumstances I need to quit that process and start it again.

Is there a rough guideline?