Issue Summary

Jira requires all project key to be at least two characters long, start with an uppercase letter, and can only contain uppercase letters and numbers.

However, older/legacy version of Jira does not enforce such requirements and project key can be set as all numerical characters such as "00000"

If such Jira project still exists and it is displayed via the Advanced Roadmap macro, the hyperlink to those issue (under the project) will break. Clicking on the link will leads to the page below:

Steps to Reproduce

1. Setup a legacy Jira version (such as Jira 6.x), create a project with the project key, "0000"
2. Upgrade Jira to a newer version (such as Jira 10.x)
3. Create a plan for the legacy Jira project
4. Share the plan to generate a URL for the Advanced Roadmap macro in Confluence
5. In Confluence, create a page to add the Advanced Roadmap macro to it
6. Click on any issue URL under the 0000 project

Expected Results

The URL will lead to the issue in Jira.

Actual Results

The URL leads to a page showing "ERROR OCCURRED".

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available