Latest version of plugin throws error with latest version of serverless framework

[alexanderluiscampino]

Bug Report

Getting the following error:

Invalid variable reference syntax for variable . You can only reference env vars, options, & files. You can check our docs for more info.

This happens with the latest npm install --save-dev serverless-step-functions -> serverless-step-functions@2.29.0

version: serverless-step-functions@2.19.0 does not have this issue.

serverless --version
Framework Core: 2.28.3
Plugin: 4.4.3
SDK: 2.3.2
Components: 3.7.1

Description

In very simple terms, this is my serverless.yml:

service: test-step-function

frameworkVersion: '2'

provider:
  name: aws
  runtime: python3.8
  lambdaHashingVersion: 20201221


plugins:
    - serverless-step-functions

functions:
  hello:
    handler: handler.hello

If the plugin section is commented out, the deployment goes through without a hitch. The absence of a stepFunction section is not a problem, nor it is needed. Simply including the plugin reference should not cause this to crash.

[abdullahdarwish]

Same issue here !!

But it's very strange as it was working before and suddenly stopped working and returning the same mentioned error

[higorcoliveira]

Same issue here.

[koskeller]

Same issue

UPD: Updating serverless to 2.28.6 solved problem for me. Try sls upgrade

[franklx2]

after upgrading, i am getting the following error:

EDIT: just to clarify, i am using ${opt:stage} heavily throughout my project. it seems that if the line to import the serverless-step-functions plugin is present while using 2.28.6, i get this

EDIT2: after downgrading to serverless@2.28.0, i can deploy once again

Type Error ---------------------------------------------

TypeError: Cannot read property 'stage' of undefined
at Variables.getValueFromOptions (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:639:26)
at Variables.getValueFromSource (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:579:17)
at Variables.splitAndGet (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:448:17)
at matches.map (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:387:40)
at Array.map ()
at Variables.populateMatches (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:387:20)
at Variables.populateValue (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:418:30)
at properties.filter.map (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:300:38)
at Array.map ()
at Variables.populateVariables (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:299:8)
at Variables.populateObjectImpl (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:333:30)
at initialCall (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:329:40)
at Variables.initialCall (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:112:20)
at Variables.populateObject (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:329:17)
at parse.then.serverlessFileParam (/home/frank/Documents/PPS/PAS/Serverless/pas-serverless-gateway/public/node_modules/serverless-step-functions/lib/yamlParser.js:26:62)

serverless.yml

#flin@ppsco.com
frameworkVersion: '2'
service: test-project

provider:
name: aws
runtime: nodejs12.x
timeout: 15
region: us-east-1
tracing: true

custom:
test: ${opt:stage}-test

plugins:

• serverless-step-functions

[capgadsx]

The update of 2.28.6 also solved this bug for me

[KrausMatthias]

Not working with serverless 2.28.7, downgrade 2.28.0 fixed the issue

[gluix20]

after upgrading, i am getting the following error:

EDIT: just to clarify, i am using ${opt:stage} heavily throughout my project. it seems that if the line to import the serverless-step-functions plugin is present while using 2.28.6, i get this

EDIT2: after downgrading to serverless@2.28.0, i can deploy once again

Type Error ---------------------------------------------
TypeError: Cannot read property 'stage' of undefined
at Variables.getValueFromOptions (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:639:26)
at Variables.getValueFromSource (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:579:17)
at Variables.splitAndGet (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:448:17)
at matches.map (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:387:40)
at Array.map ()
at Variables.populateMatches (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:387:20)
at Variables.populateValue (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:418:30)
at properties.filter.map (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:300:38)
at Array.map ()
at Variables.populateVariables (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:299:8)
at Variables.populateObjectImpl (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:333:30)
at initialCall (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:329:40)
at Variables.initialCall (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:112:20)
at Variables.populateObject (/usr/local/lib/node_modules/serverless/lib/classes/Variables.js:329:17)
at parse.then.serverlessFileParam (/home/frank/Documents/PPS/PAS/Serverless/pas-serverless-gateway/public/node_modules/serverless-step-functions/lib/yamlParser.js:26:62)

serverless.yml

#flin@ppsco.com
frameworkVersion: '2'
service: test-project
provider:
name: aws
runtime: nodejs12.x
timeout: 15
region: us-east-1
tracing: true
custom:
test: ${opt:stage}-test
plugins:

• serverless-step-functions

Same error here

[razor-x]

Seeing a similar issue. It seems simply updating to these versions and including the plugin (with or without a stepFunctions section in the config) will generate an error

    "serverless": "^2.39.0",
    "serverless-step-functions": "^2.30.0",

 Serverless Error ----------------------------------------
 
  Trying to populate non string value into a string for variable ${sls:stage}. Please make sure the value of the property is a string.
 
  Get Support --------------------------------------------
     Docs:          docs.serverless.com
     Bugs:          github.com/serverless/serverless/issues
     Issues:        forum.serverless.com
 
  Your Environment Information ---------------------------
     Operating System:          linux
     Node Version:              14.16.1
     Framework Version:         2.39.0 (local)
     Plugin Version:            4.5.3
     SDK Version:               4.2.2
     Components Version:        3.9.1

[Flavien]

Same problem as @razor-x above when referencing the serverless-step-functions plugin.

[Pigius]

The same as well.

[carpusherw]

This seems to be fixed in v3.0.0