Yes you can test this locally. The widget ID you are trying to use is linked to wearyband/favorites. This twitter user does not have any favorites, hence an empty timeline. Try creating a new widget ID that is associated to your main timeline.
Replace
<a class="twitter-timeline" href="https://twitter.com/wearybands/favorites" data-widget-id="407316719342870528">Tweets by wearybands</a>
With
<a class="twitter-timeline" href="https://twitter.com/wearybands" data-widget-id="408647058245971968">Tweets by @wearybands</a>