I have been stuck battling the import feature after the initial upload passes the JSON validation tests. I receive the message "Ok, you're ready to import your documents!" and click the "Import now!" button. Then I see the message "Uploading medias, this may take some time" and "Checking" next to each document. This sits here for about 20-30 minutes and never imports. It eventually stops and shows the same message "Ok, you're ready to import your documents!"
How can I get some information about why this is failing and/or what should be done to get the import to complete?