Jira 8.13.1 sources not available


Jira sources for version 8.13.1 could not be downloaded from my.atlassian.com with the following response:

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<Message>The specified key does not exist.</Message>

Obviously the file was not uploaded to the S3 bucket.

If anyone could point me how to report this issue to Atlassian I’ll be very grateful.