Steps to reproduce

1. In Global Permission, ensure Anonymous users "Can Use" Confluence
2. Create new Space , eg: SpaceA
   • Go To Space Tools > Permissions > Edit Permission > Ensure Anonymous Users has "View" Permission
   • Create a few test pages in SpaceA
3. Then, create a page containing both Contributors Macro and Contributors Summary Macro
   
4. Logout from Confluence and access the page created in Step 3

Expected Behaviour:

Contributors Macro shows data.

Actual Behaviour

Contributors Macro will throws "Failed to retrieve contributors information: Unauthorized" message while Contributors Summary Macro display data.