Previewing rails server on AWS Cloud 9: VFS Connection does not exist [Firefox only]
问题 Update: This is specific to Firefox. This does not occur using Chrome. I will leave the text below as is, but now the main question is, how and what in Firefox is causing this. It occurs regardless of cookie settings, such as allowing third-party cookies and trackers. Preface: I've searched and read dozens of pages trying to resolve this issue I've gone through all the troubleshooting steps in the AWS documentation, eg, https://docs.aws.amazon.com/cloud9/latest/user-guide/app-preview.html#app