I'm on Rails 5.2.0. I'm implementing bootstrap datetimepicker with below code:

```
  <div class="form-group">
    <div class='input-group date' id='datetimepicker1' data-target-input='nearest'>
      <input type='text' class="form-control datetimepicker-input" data-target="#datetimepicker1" name="params['start_time']" />
      <div class="input-group-append" data-target="#datetimepicker1" data-toggle="datetimepicker">
        <div class="input-group-text"><i class="fa fa-calendar"></i></div>
      </div>
    </div>
  </div>

```

Gemfile:

```
gem 'momentjs-rails', '~> 2.20', '>= 2.20.1'
gem 'bootstrap', '~> 4.1.1'
gem 'bootstrap4-datetime-picker-rails'
gem 'jquery-rails'

```

application.js

```
//= require jquery3
//= require jquery_ujs
//= require turbolinks
//= require popper
//= require moment
//= require bootstrap
//= require tempusdominus-bootstrap-4.js
//= require_tree .

```

application.scss

```
@import "bootstrap";
@import "tempusdominus-bootstrap-4.css";

```

I'm encoutering a problem where no icons are showing up on the page for the datetimepicker. [![enter image description here](https://i.stack.imgur.com/dWuRi.png)](https://i.stack.imgur.com/dWuRi.png)

Attached is the screenshot for reference. Can anyone please point out any fault here?

Thanks in advance.