Node Express Webpack API Release to Azure Dev Ops

I'm trying to release my project using Nodejs Express on Azure Dev Ops and Deploy on Release, but when I try to open the link. I'm getting a "The page cannot be displayed because an internal server error has occurred." error.

YAML:
pool:
name: Azure Pipelines
steps:

• task: NodeTool@0
  displayName: 'Use Node 14.x'
  inputs:
  versionSpec: 14.x

• task: Npm@1
  displayName: 'npm install'
  inputs:
  verbose: false

• task: Npm@1
  displayName: 'npm custom'
  inputs:
  command: custom
  verbose: false
  customCommand: 'run build'

• task: PublishBuildArtifacts@1
  displayName: 'Publish Artifact: drop'
  inputs:
  PathtoPublish: '$(System.DefaultWorkingDirectory)'

Package Script

Webpack.config

and on Azure Pipeline

the default setting of npm install and build

and on Azure Release

All are working fine, on the build and release.

Blank Page

I'm starting to guess the problem was from the azure portal, or on the way it was setup. Because I didn't create the portal. I'm only the Contributor.

Please help clarify this.

I try to build all files on SCM \wwwroot

• Make sure the index.js file is deployed to your azure app service

• As you have some issues with your existing application Create the new application using this MS-DOC

• Sign into Azure Pipelines. Your browser will go to to display your Azure DevOps dashboard.

• Create New pipeline under the pipeline's menu of your project

• Select GitHub as the source code location.

• If the code is placed in GitHub, then login with Git Creds

• When the list of repositories appears, select your sample Node.js repository.

• Azure Pipelines analyzes the code in your repository and automatically gives a Node.js template for your pipeline. Select this template.

• Azure Pipelines will automatically generates a YAML file in your pipeline. Click on Save and Run > Commit Directly to Master Branch and then choose Save ad Run again.

A new run begins. Wait for the run to complete.

• The link is used to create a pipeline is azure devops Deploying a Node JS App to Azure App Service using Azure Dev-ops (Part 1)

• The link will be used to deploy the Nodejs app to Azure portal using azure pipelines Deploying a Node JS App to Azure App Service using Azure Dev-ops (Part 2)

• This error is a common description of the IIS server error 500. It will be difficult to find the root cause of the question with just a general description.

• For more details, please Reference the SO-Thread