I’m trying the Wikipedia client login flow depicted in the API:Login docs, but something wrong happens: 1) I correctly get a token raised with the HTTP GET https://en.wikipedia.org/w/api.php?action=query&meta=tokens&type=login&format=json and I get a valid logintoken string. 2.1) I then try the clientlogin like: HTTP POST /w/api.php?action=clientlogin&format=json&lgname=xxxx&lgtoken=xxxx%2B%5C and the POST BODY was But I get an error: If I try to change