File not found error with node JS app

1

I am running a node js app on the free tier but i keep getting this error with running a puppeteer script

Nov 2 02:25:02 AM node:internal/process/promises:289
Nov 2 02:25:02 AM triggerUncaughtException(err, true /* fromPromise */);
Nov 2 02:25:02 AM ^
Nov 2 02:25:02 AM
Nov 2 02:25:02 AM [Error: ENOENT: no such file or directory, open ‘./a/b/myFile.png’] {
Nov 2 02:25:02 AM errno: -2,
Nov 2 02:25:02 AM code: ‘ENOENT’,
Nov 2 02:25:02 AM syscall: ‘open’,
Nov 2 02:25:02 AM path: ‘./a/b/myFile.png’
Nov 2 02:25:02 AM }

What is strange is that the script works perfectly offline. I am wondering if the problem has to do with the fact that the free tier doesn’t have persistent storage and as such the file is deleted before the script has a chance to work on it

What could be the cause? I’m open to ideas since the script just fails silently, trycatch, debug statements etc are of no help

2

Hi there,

By default, no service on Render has a persistent filesystem. All instance types use an ephemeral file system unless you add a disk.

If your service was trying to access this file after the service was restarted, it will be lost. If you just created it, then it should exist.

It’s hard to give a specific answer here without knowing more about how your service works. If you open a ticket directly with us we may be able to provide a better answer.

Regards,

Keith
Render Support, UTC+10 :australia:

3

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