API Error - experimental page FV-88

Did new layout with 28 languages. Try to upload to experimental page in appstore. upload looks ok but at the very end i get the message below. if i check in appstores experimental page, not all screens properly uploaded. some missing. will try second batch, because this was working in an older version without issues. not sure you can change the request rate, or do larger "wait" after each langauge.