Unable to create/edit invoice.

Dear wave team,
I've been unable to create or edit invoice for 1 week, it shown "Our technical team has been alerted and is working on a solution", can I have any solution with this? I'm quite urgent about it.
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Dear wave team,
I've been unable to create or edit invoice for 1 week, it shown "Our technical team has been alerted and is working on a solution", can I have any solution with this? I'm quite urgent about it.