URGENT: Error: “Proposal submission closed”

I was about to submit a fully drafted proposal and suddenly I got this error. This is quite a problem, as I think it's an error since the submission period is not closed yet, and I am just copy-pasting work that I was doing offline.

I was about to submit a fully drafted proposal and suddenly I got this error. This is quite a problem, as I think it’s an error since the submission period is not closed yet, and I am just copy-pasting work that I was doing offline.

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