2 days ago we have the section on the sidebar showing online members list, but now somehow all members can only see themselves on the list. What can we do for this?
What version of XenForo are you using? This file doesn't match the one in 1.3.3
Have you edited this file?
What changes have you made recently to your site (code edits, add-ons installed etc)?
Do you have a link to your site? Diagnosing issues with limited information and not seeing the site is difficult.