400 error is displayed on exporting cucmber test using Xray api

[Nithya Sundar]

curl -H "Content-Type: application/json" -X GET -H 'Authorization: Bearer <mytoken>' 'https://xray.cloud.getxray.app/api/v2/export/cucumber?filter=<filterid>'

i get 400 error and there is no othere details in the request. 

Is there any other details that i need to add or missing

[qa_automation]

The filter needs to be "public" and by default it's created as "private"