Resource companies does not exist error

When I attempt to run a LinkedIn import, it imports 0 instances with the error message, "Error: {"serviceErrorCode":0,"message":"Resource companies does not exist","status":404}." What does this mean? My best guess was that the Company ID was incorrect, but I verified it by going to https://www.linkedin.com/company/COMPANYID and that worked.

How can I tell what I need to do to fix this error?