Invoking sam local invoke returns an Unable to import module 'index': Error

I’m trying to play with the Hello-world example located in the samples of the repository. However upon invoking sam local invoke "HelloWorld" -e event.json inside the directory where the index, template.yml and is located.

it automatically returns the ff:

START RequestId: e50a858c-69d8-16fc-02d3-70199542bc48 Version: $LATEST Unable to import module 'index': Error at Function.Module._resolveFilename (module.js:469:15) at Function.Module._load (module.js:417:25) at Module.require (module.js:497:17) at require (internal/module.js:20:19) END RequestId: e50a858c-69d8-16fc-02d3-70199542bc48 REPORT RequestId: e50a858c-69d8-16fc-02d3-70199542bc48 Duration: 31.25 ms Billed Duration: 0 ms Memory Size: 0 M

[Stubie17]

FWIW I recently started having this issue trying to test a function that was mounting fine previously. I reset docker to factory defaults, and when I next ran sam local was prompted to allow the drive to be shared and had to enter my password, now it’s working. Quite possibly caused by my password having changed since I allowed the drive share on docker.

[Kivol]

Maybe I’m on the different case but I’ve resolved the similar Unable to import module issue on Windows, I hope sharing my workaround helps.

I’m using the Windows subsystem for Linux but running Docker on Windows and using Docker on Linux by mapping the port. On WSL, /mnt/c/ is mounted to Windows file system by default.

The problem was that this /mnt/c/blahblah paths are not mounted when running a docker container on WSL, checking on this kind of commands: docker run -it -v /var/run/docker.sock:/var/run/docker.sock -v /mnt/c/Documents/current-working-directory:/data alpine

So I re-mounted the C:\ to /c/ on Linux like this comment: https://github.com/Microsoft/WSL/issues/1854#issuecomment-291845122

And I’ve invoked my function like this: sam local invoke --docker-volume-basedir $(pwd -P) "Hello"

And it worked!