Failed to find a valid digest in the 'integrity' attribute for resource on a deployed emberjs application

I have an emberjs application which has been deployed and in google chrome browser im getting the following errors for 2 of the .js files.

Failed to find a valid digest in the 'integrity' attribute for resource 'https://ift.tt/3eAYO1k' with computed SHA-256 integrity 'Sb4Xc/Oub27QW0MKlqK0sbq0Mm476jU7MgJaCzd/gKk='. The resource has been blocked

When i inspect the file i can see script tags for the two .js files in question. I'm not 100% sure how this integrity check works. You can see the integrity attribute below with the sha's.

<script src="/assets/vendor-0ada2c9fb4d3e07ad2f0c6a990945270.js" integrity="sha256-s3XY9h9v9IThygF6UkWRvWZsf7zeTqYJ1rLfDgg1bS0= sha512-k3lfqdeZw3OcsECfD3t99Hidh6IoRlFSoIu5nJk0FkLYHwx0q/rddirj4jh4J73dmLwKfG9mx0U5Zf6ZzRBsvA==" ></script>
<script src="/assets/g-web-56670cf0485cf52f54589091e2a25cc8.js" integrity="sha256-jNmWqO61OPijscQ5cHVSbB1Ms5wKX78ZACYdhrUo3X4= sha512-oiksgRFsqgHaCvXPvd3SAsUuX4zPeVClQBIgrOgIKNBMa3hPqCHknoFqDGRtSyfN4EdIkfk/x1zSqBqRvONAGQ==" ></script>

The emberjs application is built using a docker image, deployed to kubernetes and an aws elb running haproxy is handling the routing for this application such that when i navigate to staging.x.com it routes to the internal dns in kubernetes of this service (emberjs web app).

What's interesting to note;

1. Running ember serve locally works and the applications loads fine.
2. Building and running the docker image locally works and the applications loads fine.

The issue is only occurring on my deployed staging environment.