returns {"servedby":"mw1125","error":{"code":"internal_api_error_MWException","info":"Exception Caught: Invalid or virtual namespace -1 given.","*":""}} because the page in question, https://en.wikipedia.org/wiki/User:Purplebackpack89/C , is a redirect to Special:Contributions/Purplebackpack89.
Suggestions what to return in such cases are welcome.
Version: unspecified
Severity: normal