I want to import the Rebirth_theme_sample_data.xml file, but it does not import successfully. 

I receive Failed to Load error messages. 
Failed to import Media “slider01”
Failed to import Media “slider02”

Failed to import Media “grid-slider01”
Failed to import Media “parallax”
Failed to import Media “logo”
Failed to import Media “team1”
Failed to import Media “team2”
Failed to import Media “team3”
Failed to import Media “feature-clients”
Failed to import Media “feature-clients2”
Failed to import Media “feature-clients3”
Failed to import Media “feature-clients4”
Failed to import Media “feature-clients5”

Is there another way to import the sample data into Wordpress?