Steps to Reproduce:

Generate Citations using visual editor with URL https://www.choicehotels.com/.

Actual Results:

Dialog responds with "We couldn't make a citation for you. You can create one manually using the "Manual" tab above."

Expected Results:

A basic citation using {{cite-web}}.

The error was reported on https://en.wikipedia.org/wiki/Wikipedia:VisualEditor/Feedback#Error_when_adding_citation_in_Choice_Hotels

I've tested the citoid API using my https://en.wikipedia.org/wiki/User:Salix_alba/Citoid.js script. The ajax call to
https://en.wikipedia.org/api/rest_v1/data/citation/mediawiki/https%3A%2F%2Fwww.choicehotels.com%2F?action=query&format=json

Fails with a response message of
"{\"type\":\"https://mediawiki.org/wiki/HyperSwitch/errors/not_found\",\"title\":\"Not found.\",\"method\":\"get\",\"uri\":\"/en.wikipedia.org/v1/data/citation/mediawiki/https%3A%2F%2Fwww.choicehotels.com%2F\"}"