CSP Issue when uploading new version in Elastic Beanstalk

I'm unable to upload a new version of my application. I get the following error in the browser's console:

Refused to send form data to 'https://elasticbeanstalk-eu-west-1-412334503295.s3.eu-west-1.amazonaws.com/' because it violates the following Content Security Policy directive: "form-action 'self' https://console.aws.amazon.com/feedback/submit-feedback https://signin.aws.amazon.com/switchrole https://us-east-1.console.aws.amazon.com/feedback/submit-feedback https://eu-west-1.signin.aws.amazon.com/switchrole https://eu-west-1.signin.aws.amazon.com/oauth".