We were able to successfully submit the build, just built the exact same build again bumping the version up and it went though. i think it's a issue on their end.
camhowe
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Apple replied with this:
Thank you for the follow up information provided.
Based on the provided information and other reports from other developer we are aware of the issues within App Store Connect and are doing our best to resolve them as soon as possible.
You can monitor this issue on the System Status page.
We appreciate your patience with this issue. Feel free to reach out to us if you have any further questions.