Issues uploading articles from InDesign to AEM web suite



We do this app every year for the last 5 years. We don't change much, just update some pics here and there, minor copy changes, export article from InDesign and upload to AEM web tool. This year I have a batch of articles (they have multi states and videos, no HTML) that refuse to upload to the web tool. I have the "Upload Failed" red message close to the article and I have tried everything without any positive results. Has anything changed in the InDesign > AEM article environment since last year that could be causing this error message?

Thank you in advance!