'AutoPublishAlias' must be a string or a Ref to a template parameter

[joaowingmaite]

Description

When using sam deploy with the AutoPublishAlias property in the template it always returns the error:

Error: Failed to create changeset for the stack: stack-name, ex: Waiter ChangeSetCreateComplete failed: Waiter encountered a terminal failure state: For expression "Status" we matched expected path: "FAILED" Status: FAILED. Reason: Transform AWS::Serverless-2016-10-31 failed with: Invalid Serverless Application Specification document. Number of errors found: 1. Resource with id [DocumentLoaderFunction] is invalid. 'AutoPublishAlias' must be a string or a Ref to a template parameter

Note 1: This happens wether I use a string directly or a !Ref to a Template Parameter
Note 2: This fails in macOS, but for example when running in a Github Action it works correctly.

Steps to reproduce

Use the following template:

AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: >
  Sample

Globals:
  Function:
    Timeout: 30

Resources:
  SomeFunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: function/
      Handler: app.lambdaHandler
      Runtime: nodejs20.x
      MemorySize: 512
      Timeout: 60
      FunctionName: SomeFunction
      AutoPublishAlias: DEV
      Architectures:
        - x86_64
      Role: arn:aws:iam::XXXXXX:role/SomeRole
    Metadata: # Manage esbuild properties
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        Sourcemap: true
        EntryPoints:
          - app.ts

Run

sam deploy

Observed result

Error: Failed to create changeset for the stack: stack-name, ex: Waiter ChangeSetCreateComplete failed: Waiter encountered a terminal failure state: For expression "Status" we matched expected path: "FAILED" Status: FAILED. Reason: Transform AWS::Serverless-2016-10-31 failed with: Invalid Serverless Application Specification document. Number of errors found: 1. Resource with id [DocumentLoaderFunction] is invalid. 'AutoPublishAlias' must be a string or a Ref to a template parameter

Expected result

A success full deploy

Additional environment details

1. OS: macOS 15.3 (Sequoia)
2. If using the SAM CLI, sam --version: 1.133.0
3. AWS region: eu-central-1

[vicheey]

Thank you. Will try to reproduce the bug.