When analyzing your site's logs to investigate "temporarily unavailable" errors on your Acquia Cloud site, you may encounter an error message like the one below in your php-errors.log:

One challenge encountered by many Drupal site builders and developers is finding the source of an unwanted HTTP 301 or 302 redirect which is preventing viewers from accessing their site's content via the web. Finding the place in your site's code or configuration where this unwanted redirect is being triggered can be a tricky and frustrating task. In this article, we'll discuss a couple of techniques you can use to rule out or narrow in on the potential sources of 301 and 302 redirects on your site.

Let's say you have followed all of the procedures for setting up the Experience Builder bookmark as presented in Setting up access to the Experience Builder; yet, you are still having issues activating the Acquia Lift sidebar.

Here are some quick troubleshooting tips to move things along: