Handle missing/null language generously
Missing or wrongly set (to null
- but not to some random string!) parameter language
in the POST request for RMBTControlServer/history
causes request failure ending with HTTP status code 400
and return data {"error":["Illegal JSON request received."]}
I propose to to set the language
to en_US
when it is missing or wrongly set like in turris/netmetr-client!2 (merged)