I’ve been developing a survey in KoBo and have finally finalized it. However now I’m unable to Deploy it (server error 500)

Hello there!
I’m new to the KoBo community. I’ve been developing a survey in KoBo and have finally finalized it. However now I’m unable to Deploy it (server error 500). I can’t figure out what’s wrong with my survey as before I had no problems deploying it… Can anyone help please? Thank You!
Kind regards,
Ellen

@ellengeerlings, you should always be able to identify syntax issues by validating your XLSForm through this online validator.