Attempting to edit any page in betalabs is giving following error:
Error loading data from server: internal_api_error_MWException: Exception Caught: Tag hook for namespace is not callable.
In the console,I see the following error
Uncaught TypeError: Cannot read property '$actions' of null
Test Environment: http://en.wikipedia.beta.wmflabs.org/
Browser: Chrome Version 26.0.1410.65 & FF 25
OS: MAC OS X 10. 8. 5
Page:http://en.wikipedia.beta.wmflabs.org/w/index.php?title=27th_december
Version: unspecified
Severity: major