title: Cannot use github as code source in Deployement Center
body: <p>I cannot use github as source in azure app service deployment center.
  when I select github, the screen turns into white only
  <a href="https://i.stack.imgur.com/Jv32d.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Jv32d.png" alt="enter image description here" /></a></p>
  <p>Its working fine when I use Deployment Center (classic)
  <a href="https://i.stack.imgur.com/yRDQp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yRDQp.png" alt="enter image description here" /></a></p>
  <p>here is the details of the app service</p>
  <pre>
  {
      "name": "AppServicePlan-B1",
      "type": "Microsoft.Web/serverfarms",
      "kind": "app",
      "location": "Southeast Asia",
      "properties": {
          "name": "AppServicePlan-B1",
          "workerSize": 0,
          "workerSizeId": 0,
          "workerTierName": null,
          "numberOfWorkers": 1,
          "currentWorkerSize": 0,
          "currentWorkerSizeId": 0,
          "currentNumberOfWorkers": 1,
          "status": 0,
          "adminSiteName": null,
          "hostingEnvironment": null,
          "hostingEnvironmentProfile": null,
          "maximumNumberOfWorkers": 3,
          "planName": "VirtualDedicatedPlan",
          "adminRuntimeSiteName": null,
          "computeMode": 1,
          "siteMode": null,
          "geoRegion": "Southeast Asia",
          "perSiteScaling": false,
          "maximumElasticWorkerCount": 1,
          "numberOfSites": 27,
          "hostingEnvironmentId": null,
          "isSpot": false,
          "spotExpirationTime": null,
          "freeOfferExpirationTime": null,
          "tags": null,
          "kind": "app",
          "reserved": false,
          "isXenon": false,
          "hyperV": false,
          "targetWorkerCount": 0,
          "targetWorkerSizeId": 0,
          "provisioningState": "Succeeded",
          "webSiteId": null,
          "existingServerFarmIds": null,
          "kubeEnvironmentProfile": null,
          "azBalancing": false
      },
      "sku": {
          "name": "B1",
          "tier": "Basic",
          "size": "B1",
          "family": "B",
          "capacity": 1
      }
  }
  </pre>
  <p>UPDATE:
  There is an error upon checking the console
  <a href="https://i.stack.imgur.com/b6wHA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/b6wHA.png" alt="enter image description here" /></a></p>