For some of the endpoints listed in https://en.wikipedia.org/api/rest_v1/#/Page%20content/getFormatRevision2 the "Try it out" feature returns 406 but when the same URL is used in a browser or in curl those return a 200.
Example: /page/html/{title}/{revision}/{tid} endpoint
curl -X GET "https://en.wikipedia.org/api/rest_v1/page/html/Cat/892292867/17bfc8c0-6130-11e9-b2db-b90c06fd84a7" -H "accept: text/html; charset=utf-8; profile="https://www.mediawiki.org/wiki/Specs/HTML/1.7.0""
Expected: 200
Actual response: 406
{ "type": "https://mediawiki.org/wiki/HyperSwitch/errors/unknown_error", "method": "get", "uri": "/en.wikipedia.org/v1/page/html/Cat/892292867/17bfc8c0-6130-11e9-b2db-b90c06fd84a7" }