How to fix 403 Forbidden error after deploying Laravel app to Azure App Service?

I have a simple Laravel app in Azure DevOps.

Below is my yml file for the CI logic and I can successfully create a release and deploy it to an Azure App Service. However, when I load the url I get a 403 Forbidden error.

If more info is needed please let me know. Thanks.

trigger:
- main

variables:
  # Agent VM image name
  vmImageName: 'ubuntu-latest'
  # Root folder under which your composer.json file is available.
  rootFolder: $(System.DefaultWorkingDirectory)

stages:
- stage: Build
  displayName: Build stage
  variables:
    phpVersion: '8.2'
  jobs:
  - job: BuildJob
    pool:
      vmImage: $(vmImageName)
    steps:
    - script: |
        sudo update-alternatives --set php /usr/bin/php$(phpVersion)
        sudo update-alternatives --set phar /usr/bin/phar$(phpVersion)
        sudo update-alternatives --set phpdbg /usr/bin/phpdbg$(phpVersion)
        sudo update-alternatives --set php-cgi /usr/bin/php-cgi$(phpVersion)
        sudo update-alternatives --set phar.phar /usr/bin/phar.phar$(phpVersion)
        php -version
      workingDirectory: $(rootFolder)
      displayName: 'Use PHP version $(phpVersion)'

    - script: composer install --no-interaction --prefer-dist
      workingDirectory: $(rootFolder)
      displayName: 'Composer install'

    - script: |
        cp .env.example .env
        php artisan key:generate
        php artisan config:clear
        php artisan config:cache
      workingDirectory: $(rootFolder)
      displayName: 'Set Laravel Environment'
  

    - script: php artisan test
      displayName: 'Run tests with phpunit'

    - task: ArchiveFiles@2
      displayName: 'Archive files'
      inputs:
        rootFolderOrFile: '$(rootFolder)'
        includeRootFolder: false
        archiveType: zip
        archiveFile: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
        replaceExistingArchive: true

    - upload: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
      displayName: 'Upload package'
      artifact: drop