We have 2 Bitbucket instances with data center license and are trying to import project, repository of one into the other following https://confluence.atlassian.com/bitbucketserver0721/export-and-import-projects-and-repositories-1115666538.html.
While the export works fine, the import doesn't. Even after specifying the correct path to exported tar file, it doesn't pick the file/path. Screenshot of the error is attached.

Bitbucket version =v7.21.4
$BITBUCKET_HOME = /var/atlassian/application-data/bitbucket
Location of tar file = /var/atlassian/application-data/bitbucket/shared/data/migration/import/
Unable to figure out why the import job is not picking the file correctly.