I keep getting "Error: npm.cmd ls -prod -json -depth=1 failed with code 1" when trying to deploy AWS lambda serverless

Question

Below is my terminal output. Is there something missing in my environment or is there a conflict with node versions? I'm using node v.10 but the repo is using node v.8

I've tried uninstalling the node-modules and running npm install but still keep getting the same error.

I even downgraded to node v.8 but it wouldn't work with most of the packages so I had to upgrade back to v10.

Can anyone help pinpoint what the issue could be? Thanks.

$ sls deploy -f function --stage <env>

Serverless: Bundling with Webpack...
Time: 15299ms
Built at: 02/23/2021 5:08:25 PM

                         Asset      Size  Chunks                          Chunk Names
{resource}/serverless/router.js  6.52 MiB       0  [emitted]        [big]  
{resource}/serverless/router
{resource}/serverless/router.js.map  3.54 MiB       0  [emitted] [dev]         
{resource}/serverless/router
{resource}/serverless/router [big] = {resource}/serverless/router.js 
{resource}/serverless/router.js.map
[2] ./node_modules/moment/moment.js 170 KiB {0} [built]
[11] external "https" 42 bytes {0} [built]
[17] ./node_modules/ramda/es/index.js + 328 modules 325 KiB {0} [built]
  | ./node_modules/ramda/es/index.js 12.6 KiB [built]
  | ./node_modules/ramda/es/F.js 324 bytes [built]
  | ./node_modules/ramda/es/T.js 321 bytes [built]
  | ./node_modules/ramda/es/__.js 739 bytes [built]
  | ./node_modules/ramda/es/add.js 444 bytes [built]
  | ./node_modules/ramda/es/curryN.js 1.62 KiB [built]
  | ./node_modules/ramda/es/addIndex.js 1.65 KiB [built]
  | ./node_modules/ramda/es/adjust.js 1.35 KiB [built]
  | ./node_modules/ramda/es/all.js 1.12 KiB [built]
  | ./node_modules/ramda/es/max.js 445 bytes [built]
  | ./node_modules/ramda/es/bind.js 1.05 KiB [built]
  | ./node_modules/ramda/es/keys.js 1.96 KiB [built]
  | ./node_modules/ramda/es/map.js 2 KiB [built]
  | ./node_modules/ramda/es/path.js 757 bytes [built]
  | ./node_modules/ramda/es/prop.js 690 bytes [built]
  |     + 314 hidden modules
[43] ./node_modules/axios/index.js 40 bytes {0} [built]
[79] ./{resource}/{param}.js 2.33 KiB {0} [built]
[80] ./{resource}/serverless/config.js 549 bytes {0} [built]
[273] ./{resource}/serverless/{function}.js 82 bytes {0} [built]
[274] ./{resource}/serverless/{function}/index.js 2.17 KiB {0} [built]
[275] ./{resource}/serverless/router.js 1.35 KiB {0} [built]
[276] ./utils/JWTMiddleware.js 1.31 KiB {0} [built]
[301] ./node_modules/cryptr/index.js 1.78 KiB {0} [built]
[302] ./node_modules/jsonwebtoken/index.js 276 bytes {0} [built]
[319] ./utils/CorsResponse.js 1.27 KiB {0} [built]
[320] ./{resource}/serverless/{function}.js 1.12 KiB {0} [built]
[323] ./{resource}/serverless/{function}/index.js 4.72 KiB {0} [built]
+ 1081 hidden modules


Error --------------------------------------------------


Error: npm.cmd ls -prod -json -depth=1 failed with code 1
at ChildProcess.child.on.exitCode (C:<path to node_modules>\node_modules\serverless-webpack\lib\utils.js:91:16)
at ChildProcess.emit (events.js:198:13)
at ChildProcess.EventEmitter.emit (domain.js:448:20)
at maybeClose (internal/child_process.js:982:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)

For debugging logs, run again after setting the "SLS_DEBUG=*" environment variable.

Get Support --------------------------------------------
    Docs:          docs.serverless.com
    Bugs:          github.com/serverless/serverless/issues
    Issues:        forum.serverless.com

Your Environment Information ---------------------------
    Operating System:          win32
    Node Version:              10.23.3
    Framework Version:         1.60.5
    Plugin Version:            3.2.7
    SDK Version:               2.2.1
    Components Core Version:   1.1.2
    Components CLI Version:    1.4.0

Answer 1

Removing node_modules AND package-lock.json, followed by npm install worked for me.

Answer 2

In my case I was using serverless-bundle instead of serverless-webpack. The mistake for me was with an extra field in the custom.bundle field in serverless.yml

Extra webpack field

    custom:
      bundle:
        linting: false
    
        webpack:
           webpackConfig: webpack.config.js
           packager: "yarn"

Without the extra webpack field

    custom:
      bundle:
        linting: false
        webpackConfig: webpack.config.js
        packager: "yarn"