navigation tree on wiki pages is not visible

[narbifyqopyd at web.de]

Hello,

when I visit the openjdk wiki at [1] the left sidebar does not show the navigation tree. Instead I see a read box with the text "Spacetree License Error" and then some more [2]. Just wanted to let you know, perhaps it can be fixed easily.

Best Regards,
Michael


[1] https://wiki.openjdk.java.net/dashboard.action
[2] "This license is not valid for the current version of the Spacetree Plugin. You must either obtain a new license or use an older version of the plugin. Please contact your system administrator."