Layer "ve": Unable to connect to Microsoft Bing service. Authentication failed. Failed to execute (ExportWebMap). Failed to execute (Export Web Map).
Unfortunately I do not have a solution for you, but I just wanted to report that I am still able to print Bing Maps, so I don't think it's part of the phasing out or anything. I will note, however, that we deploy a custom Export Web Map Task, so maybe that plays a role? Not sure, just conjecture.