'Serverless command "offline" not found

I am running my nodejs code and also installed serverless(npm i -g serverless) but while running it with the command sls offline start --CacheInvalidations I am getting error as:-

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

Serverless command "offline" not found. Did you mean "config"? Run "serverless help" for a list of all available commands.

Get Support --------------------------------------------

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

Your Environment Information ---------------------------

 Operating System:          linux
 Node Version:              12.18.2
 Framework Version:         1.79.0
 Plugin Version:            3.7.1
 SDK Version:               2.3.1
 Components Version:        2.34.6

Solution 1:^[1]

You need to install the serverless-offline plugin using npm in order to use sls offline command.

Just simply run:

npm i -g serverless-offline

to install globally on your device or

npm i serverless-offline --save-dev

to install it as a development dependency in the active project. and then add this configuration to your serverless template:

plugins:
  - serverless-offline

For more information on serverless-offline plugin take a look at serverless official documents:

Serverless Offline | Emulate AWS ? and API Gateway locally when developing your Serverless project

Serverless Offline NPM

Solution 2:^[2]

I was facing the same issue while setting up serverless.yml with nodejs and running it on local. Two steps resolved the problem.

Install serverless-offline package globally.

npm i -g serverless-offline

Add the same package under the plugin key of your serverless.yml file.

plugins:
- serverless-offline

Solution 3:^[3]

You have to install the package (or locally in your project or globally). I do recommend install globally.

npm i -g serverless-offline

yarn global add serverless-offline

Inside your serverless.yml file, add in the plugins session the following code:

plugins:

serverless-offline

It will sove your problem

Solution 4:^[4]

Not sure if you solved this issue but I was having the same problem, for me it was a silly error, the indentation of the YML file was wrong, after fixing the indentation it started to work just fine

Solution 5:^[5]

Installing the dependency with yarn you can run the command typing the following:

Install:

yarn add serverless-offline -D

Run:

yarn serverless offline start

Solution 6:^[6]

First, you have to install serverless offline globally.

npm i -g serverless-offline

Next, you should check a serverless.yml file. Otherwise, you must create a serverless.yml file.

service: your-service-name
app: app-name
provider:
  name: aws
  runtime: nodejs10.x
  timeout: 60
  memorySize: 128
  deploymentBucket: bucket-name
# you can overwrite defaults here
  stage: prod
  region: your-aws-region
functions:
  your-function-name:
    handler: handler.dispatch
    memorySize: 128
    timeout: 60
    events:
      #- http: POST /hello
      - http: 'ANY {proxy+}'
plugins:
  - serverless-offline
  - serverless-aws-alias

Solution 7:^[7]

make sure serverless-offline is installed (globaly or at the project)
Add these lines to serverless.yml

plugins:
  # Needed to run & debug locally
  - serverless-offline

Solution 8:^[8]

Try in your project with the npx prefix. So npx sls offline or npx serverless offline. It worked for me.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Mohammad Moallemi
Solution 2	Rajat Upadhyay
Solution 3	Daniel Abib
Solution 4	Roberto Guajardo
Solution 5	rigobcastro
Solution 6	tugberkgunver
Solution 7	Elad Rubi
Solution 8	Rutvi Trivedi

'Serverless command "offline" not found

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