Error when running exp start

Hi,

Whenever I run exp start I am getting this error. I get this error even if the app is not detached.

Error: kill EPERM
    at exports._errnoException (util.js:1022:11)
    at ChildProcess.kill (internal/child_process.js:389:26)
    at done (C:\Users\cameronl\AppData\Roaming\npm\node_modules\exp\node_modules
\@expo\ngrok\index.js:175:5)
    at Object.onceWrapper (events.js:316:30)
    at emitOne (events.js:115:13)
    at Socket.emit (events.js:210:7)
    at addChunk (_stream_readable.js:252:12)
    at readableAddChunk (_stream_readable.js:239:11)
    at Socket.Readable.push (_stream_readable.js:197:10)
    at Pipe.onread (net.js:589:20)

I’m not sure what’s causing this and am not super familiar with Windows but it looks like people have had a similar error with other (non-Expo) programs too. This thread says that Bash for Windows might be the culprit – are you using that perhaps?