I am working on a internal app for my company in G Suite. I have a modal dialog that I am using in the spreadsheet app. I can not find a way to do this on Drive for mobile so I decided to Deploy as a web app. I have never used this feature in app script so I decided to set up a new project to mess around with before I applied it to my active project. I have two files in the project; Code.gs
function doGet(e) {
return HtmlService
.createHtmlOutputFromFile('mainPage')
.setSandboxMode(HtmlService.SandboxMode.IFRAME);
}
and mainPage.html
<!DOCTYPE html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css">
</head>
<body>
<!-- Reference: http://getbootstrap.com/javascript/#tabs -->
<div role="tabpanel">
<!-- Nav tabs -->
<ul class="nav nav-tabs" role="tablist">
<li role="presentation" class="active"><a role="tab" data-toggle="tab" aria-controls="home" href="#home">Home</a>
</li>
<li role="presentation"><a role="tab" data-toggle="tab" aria-controls="profile" href="#profile">Profile</a>
</li>
<li role="presentation"><a role="tab" data-toggle="tab" aria-controls="messages" href="#messages">Messages</a>
</li>
<li role="presentation"><a role="tab" data-toggle="tab" aria-controls="settings" href="#settings">Settings</a>
</li>
</ul>
<!-- Tab panes -->
<div class="tab-content">
<div role="tabpanel" class="tab-pane active" id="home">Lorem ipsum dolor sit amet</div>
<div role="tabpanel" class="tab-pane" id="profile">consectetur adipiscing elit,</div>
<div role="tabpanel" class="tab-pane" id="messages">sed do eiusmod tempor incididun</div>
<div role="tabpanel" class="tab-pane" id="settings">ut labore et dolore magna aliqua</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
</body>
</html>
I click "File>Manage Version" and create a version. Then "Publish>Deploy As WebApp" and get this Fetching Data
I have let this sit for more than 30 minutes with no change. I restarted my system and went through the steps again and still no change. Any suggestions on what is going on?

