YAML Extends Template - Unrecognized value: 'else'. Located at position 1 within expression: else - azure-devops

Question

Expanding on my first question. I am now experiencing a new error Unrecognized value: 'else'. Located at position 1 within expression: else that I cannot figure out a solution to. The issue happens when I add the 'else' condition within the foreach of the job.steps.
Build YAML
resources:
repositories:
- repository: self
type: git
ref: refs/heads/Development
- repository: AdoRestrictions
type: git
name: utl-yaml-templates
ref: refs/heads/main
trigger: none
pool:
name: PROD
extends:
template: ADO_Stage_Restrictions_Dev.yml#AdoRestrictions
parameters:
stageObjs:
- stage: 'BuildStage'
displayName: 'Build Test'
jobs:
- job: 'BuildJob'
displayName: 'Build'
steps:
- task: PowerShell#2
displayName: 'PS Hello World'
inputs:
targetType: inline
script: |
Write-Host "Hello World"
Working Extends YAML
parameters:
- name: stageObjs
type: stageList
default: []
stages:
- ${{ each stage in parameters.stageObjs }}:
- stage: ${{ stage.stage }}
displayName: ${{ stage.displayName }}
jobs:
- ${{ each job in stage.jobs }}:
- job: ${{ job.job }}
displayName: ${{ job.displayName }}
steps:
- ${{ each step in job.steps }}:
- ${{ if or(startsWith(step.task, 'PowerShell'),startsWith(step.task, 'CmdLine'),startsWith(step.task, 'Bash'),startsWith(step.task, 'ShellScript'),containsValue(step.task, 'Script'),containsValue(step.task, 'CLI'),containsValue(step.task, 'PowerShell')) }}:
- task: PowerShell#2
displayName: 'Unapproved - ${{ step.displayName }}'
inputs:
targetType: inline
script: Write-Output "Unapproved Task - Scripting and CLI tasks are not approved for use in yaml pipelines"
Broken Extends YAML
parameters:
- name: stageObjs
type: stageList
default: []
stages:
- ${{ each stage in parameters.stageObjs }}:
- stage: ${{ stage.stage }}
displayName: ${{ stage.displayName }}
jobs:
- ${{ each job in stage.jobs }}:
- job: ${{ job.job }}
displayName: ${{ job.displayName }}
steps:
- ${{ each step in job.steps }}:
- ${{ if or(startsWith(step.task, 'PowerShell'),startsWith(step.task, 'CmdLine'),startsWith(step.task, 'Bash'),startsWith(step.task, 'ShellScript'),containsValue(step.task, 'Script'),containsValue(step.task, 'CLI'),containsValue(step.task, 'PowerShell')) }}:
- task: PowerShell#2
displayName: 'Unapproved - ${{ step.displayName }}'
inputs:
targetType: inline
script: Write-Output "Unapproved Task - Scripting and CLI tasks are not approved for use in yaml pipelines"
- ${{ else }}:
- ${{ step }}
Full Error Message
(Line: 22, Col: 13): Unrecognized value: 'else'. Located at position 1 within expression: else. (Line: 22, Col: 13): Expected at least one key-value pair in the mapping
Update - Working Solution
parameters:
- name: stageObjs
type: stageList
default: []
stages:
- ${{ each stage in parameters.stageObjs }}:
- stage: ${{ stage.stage }}
displayName: ${{ stage.displayName }}
jobs:
- ${{ each job in stage.jobs }}:
- job: ${{ job.job }}
displayName: ${{ job.displayName }}
steps:
- ${{ each step in job.steps }}:
#Disallow any type of scripting tasks
- ${{ if or(startsWith(step.task, 'PowerShell'),startsWith(step.task, 'CmdLine'),startsWith(step.task, 'Bash'),startsWith(step.task, 'ShellScript'),contains(step.task, 'Script'),contains(step.task, 'CLI'),contains(step.task, 'PowerShell')) }}:
- task: PowerShell#2
displayName: 'Unapproved Task - ${{ step.displayName }}'
inputs:
targetType: inline
script: throw "Unapproved Task - Scripting and CLI tasks are not approved for use in yaml pipelines"
#Not a scripting task perform additional checks
- ${{ if and(not(startsWith(step.task, 'PowerShell')),not(startsWith(step.task, 'CmdLine')),not(startsWith(step.task, 'Bash')),not(startsWith(step.task, 'ShellScript')),not(contains(step.task, 'Script')),not(contains(step.task, 'CLI')),not(contains(step.task, 'PowerShell')) ) }}:
#Validate azure subscription provided for the environment
- ${{ if contains(step.task, 'Azure') }}:
- ${{ each pair in step }}:
${{ if eq(pair.key, 'inputs') }}:
inputs:
${{ each attribute in pair.value }}:
${{ if contains(attribute.key, 'Subscription') }}:
${{ if and(ne(attribute.value, 'sub-name1'), ne(attribute.value, 'sub-name2'), ne(attribute.value, 'sub-name3')) }}:
${{ attribute.value }}: ''
${{ if or(eq(attribute.value, 'sub-name1'), eq(attribute.value, 'sub-name2'), eq(attribute.value, 'sub-anme3')) }}:
${{ pair.key }}: ${{ pair.value }}
${{ if ne(pair.key, 'inputs') }}:
${{ if eq(pair.key, 'displayName') }}:
${{ pair.key }}: 'Invalid Azure Subscription - ${{ pair.value }}'
${{ if ne(pair.key, 'displayName') }}:
${{ pair.key }}: ${{ pair.value }}
#Allow all other tasks
- ${{ if not(contains(step.task, 'Azure')) }}:
- ${{ step }}