Trying to submit a Power BI Custom Visual but receiving email-error on [email protected]

Hi,

I am trying to submit our Power Bi custom visual to get it published in the AppSource.

However when sending the email with the pbix and the pbiviz file to [email protected] to get the app-package I do receive the following error:

Can anyone tell me what address we need to use to sent the data to get the app-package.

I have done this several times already and never had this problem.

Regards

Paul