Often HTTP authentication is used on staging sites to avoid unwanted visitors.

This will, in many cases block the Clerk importer as well and typically display a 401 Unauthorized error in the sync log.

You can easily verify the importer by inserting the authentication info in the import URL like below, in Data Sync at my.clerk.io: 

http://USER:PASS@www.ewoksRus.com/JSONFEED

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