Could you specify the time/date when you last saw this issue? That would help me narrow down where to look in the logs for the issue at hand. Also, is this issue happening every time or periodically? 

If you remember any important details of what you were doing before you efiled then that would be useful too.

E.g.

1. Did you efile from an open return or from the HomeBase

2. Did you efile multiple at once or just one?