[Deprecation] Unhandled promise error

[joshuaSmith2021]

• Version: v10.8.0
• Platform: Linux raspberrypi 4.14.52-v7+ doc: add TC meeting minutes 2015-03-04 #1123 SMP Wed Jun 27 17:35:49 BST 2018 armv7l GNU/Linux

I'm using firebase-tools, and I run firebase login, which throws this error:

(node:10422) UnhandledPromiseRejectionWarning: Error: Exited with code 3
    at ChildProcess.cp.once.code (/home/pi/.nvm/versions/node/v10.8.0/lib/node_modules/firebase-tools/node_modules/opn/index.js:84:13)
    at Object.onceWrapper (events.js:273:13)
    at ChildProcess.emit (events.js:182:13)
    at ChildProcess.EventEmitter.emit (domain.js:442:20)
    at maybeClose (internal/child_process.js:962:16)
    at Socket.stream.socket.on (internal/child_process.js:381:11)
    at Socket.emit (events.js:182:13)
    at Socket.EventEmitter.emit (domain.js:442:20)
    at Pipe._handle.close (net.js:599:12)
(node:10422) 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(). (rejection id: 1)
(node:10422) [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.

[mscdex]

This issue tracker is for reporting bugs in node core and submitting feature requests for node core.

General help questions should be posted to the nodejs/help issue tracker instead.

Issues with third-party modules (e.g. firebase-tools), npm, or other tools that use node, should be posted to the appropriate issue tracker for that project, unless it can be proven that the issue is in fact with node core and not the module/tool in question.

[joshuaSmith2021]

Ok! Thanks for pointing me in a better direction.