Broken hyperlinks in notifications

Hi,

We are running gitlab 12.0.3-ee on Ubuntu 16.04.

With this latest version of gitlab we are finding that images in a project (e.g. PlantUML) generate Error 404 pages when internal notifications are sent to project users.

For example, in Chrome, load GitLab page, right-click on image, Copy link address;

http://<host_url>/<project_group>/<project_name>/uploads/1e6d8a8159d758c71f910695e447f8eb/image.png

Doing the equivalent in MS Outlook on the notification email yields this:

http://<host_url>/groups/<project_group>/-/uploads/1e6d8a8159d758c71f910695e447f8eb/image.png

This second link gives 404 error, but the first is fine.

Is there a configuration variable for GitLab for the location of the image store?

Steve