Serverless framework: Serverless Error Function not found:

Question

I'm getting started with nodejs and the serverless framwork.

My handler.js contains:

'use strict';
var index = require('./index.js');

module.exports.hello = async event => {
  var res = await index.main();

  console.log('hello');
  console.log(res);

  console.log('IN HANDLER');
  return {
    statusCode: 200,
    body: JSON.stringify(
      {
        message: 'main function executed!',
        input: event,
      },
      null,
      2
    ),
  };


};

My serverless.yml contains:

# You can pin your service to only deploy with a specific Serverless version
# Check out our docs for more details
# frameworkVersion: "=X.X.X"

provider:
  name: aws
  runtime: nodejs12.x
  region: us-east-1
  # here we put the layers we want to use
  layers:
    # Google Chrome for AWS Lambda as a layer
    # Make sure you use the latest version depending on the region
    # https://github.com/shelfio/chrome-aws-lambda-layer
    # - arn:us-east-1:arn:aws:lambda:us-east-1:764866452798:layer:chrome-aws-lambda:10
    - arn:aws:lambda:us-east-1:764866452798:layer:chrome-aws-lambda:10
  # function parameters

# you can add packaging information here
#package:
#  include:
#    - include-me.js
#    - include-me-dir/**
#  exclude:
#    - exclude-me.js
#    - exclude-me-dir/**

functions:
  hello:
    handler: handler.hello
  # main:
    # handler: handler.main
#    The following are a few example events you can configure
#    NOTE: Please make sure to change your handler code to work with those events
#    Check the event documentation for details
    events:
     - http:
         path: hello/get
         method: get

my index.js:

async function main(event, context, callback) {
  const chromium = require('chrome-aws-lambda');
  const puppeteer = require('puppeteer');
  const os = require('os');
  const CREDS = require('./.creds');

  // exports.handler = async (event, context, callback) => {
  let result = null;
  let browser = null;

    try {
      browser = await chromium.puppeteer.launch({
        args: chromium.args,
        defaultViewport: chromium.defaultViewport,
        executablePath: await chromium.executablePath,
        headless: chromium.headless,
        ignoreHTTPSErrors: true,
      })
    } 
      catch {
      console.log('browser failed')
    };



  var page = await browser.newPage();

   ........



  // })().catch(e => { console.error(e) });
};

main().catch(e => { console.error(e) });

module.exports.main = main;

When I run:

$ sls invoke -f hello

 Serverless Error ---------------------------------------

 Function not found: arn:aws:lambda:us-east-1:155754363046:function:sellthelandnow-dev-hello

The error is in the title. What am I doing wrong here?

Answer 1

Let me explain here. Serverless framework can invoke(run) lambda in two ways(locally and in cloud-AWS). It seems you are trying to invoke lambda in AWS. (arn:aws:lambda:us-east-1:155754363046:function:sellthelandnow-dev-hello) Basically this arn does not exist in your AWS-155754363046 account. you need to use

serverless deploy

to deploy lamdba to aws env.If you just want to test locally, the command is

serverless invoke local --function functionName

So I will suggest in case you want to invoke lambda in the cloud.You need to first deploy it Or you use invoke local.

Thanks,

Ashish

Answer 2

In my specific case i had this error code when i deleted the deplyed lambda function in the AWS Management Console but did not delete the Application Stack and tried to deploy the lambda function again using

serverless deploy

You have to delete the Application stack and also make sure to delete IAM Execution Role for your lambda.

---

Additional Information

I didn't have to delete the s3 bucket - it was reused.

You can find your application stack in the AWS Management Console

• AWS Management Console → Lambda → Applications

And delete

• AWS Management Console → CloudFormation → Stacks
• If the deletion fails u might be prompted to keep associated resources (IAM Role and s3 Bucket)
• choose to keep the resources and delete them afterwards manually

Error Message

An error occurred: [functionName]LambdaFunction - Resource handler returned message: "Lambda function [application stack name]-[application stage]-[lambda function name] could not be found" (RequestToken: 01010011-0111-0011-1100-001100110011, HandlerErrorCode: NotFound).