Please help - interview on Tuesday (Ph)

Hi! We are having issues uploading the IRS tax return transcripts as the CEAC website kept giving us an error message that says “Webservice unable to scan file”. We are not sure if we will be able to upload the files before my interview on Tuesday but I do have a printed copy of these documents. We have already uploaded the W-2s and 1040 forms in CEAC, is it still necessary to upload the tax return transcripts as well? Thank you