You are receiving the below error when trying to publish an invoice.
Value cannot be null. Parameter name: key
This error can be thrown due to an internal error within your integration.
To clear this error from your invoice, please do the following:
Disconnect and reconnect your integration.
Republish the affected invoice(s).
Allow them 10-15 minutes to transfer over to your accounting package.
Please note: If the invoices do not publish after following these steps, please send the Support Team a message via live chat, or email email@example.com for further guidance.