My campaign won't give me a preview or a test message, and won't actually send.

[JenniferS8371]

My campaign I was trying to send out tonight will not allow me to see a preview of the campaign, or let me send a test message.  I skipped over that and was trying to send it out anyway, and if gave me an error message.  It allowed me to go through all the steps of sending a campaign, and hitting send.  It gave me an error after it was sent, and did not actually send to any contacts. 

I have sent out multiple campaigns successfully before, and I've never had this problem.  Any tips as to what might be causing it / how to fix it?  TIA. 

Below is a screenshot of the error. 

[William_D]

Hello @JenniferS8371 ,

It appears our higher level technical team has already followed up in an email. I would recommend replying directly to that email for further insight and assistance for the issue.