Online assessment

I’m studying online and I’ve just submitted one of my unit projects and just realised I forgot to upload one the files needed. I’ve emailed one of the teachers if there any chance I can email them the missing file to be marked. Or if I have to wait until the second chance to upload everything.

Just want to know if anyone else forgot a file and the teacher allowed you to email it too them or do I have to use my last chance for submitting a project for the opportunity?