Regarding cross domain origin request

I tried to send a request to swifttype search using React axios post method but it gives cross origin error:

XMLHttpRequest cannot load https://api.swiftype.com/api/v1/engines/library/document_types/books/search.json. No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:8000’ is therefore not allowed access. The response had HTTP status code 401.

Please help me regarding this issue.
Here are my engine details