Other tickets have an update, It's known and being worked on now.
https://support.abp.io/QA/Questions/4528/No-packages-exist-with-this-id-in-sources-ABP-Commercial-NuGet-Source-HangfirePro https://support.abp.io/QA/Questions/4527/error-NU1101-Unable-to-find-package-Voloxxxx-No-packages-exist-with-this-id-in-sources https://support.abp.io/QA/Questions/4526/Error-when-compile-AuthServer-and-BlazorServer-Project
I suspect this is a little more widespread than just yourselves, I am unable to pull down any module, getting an "Unable to find package X" for the entire volo set. I tried running ABP Suite Update, and had the same issue there - I suspect a service has gone down ABP side. Trying to navigate to the "SearchQueryService/3.0.0-beta" endpoint in the NuGet feed (#3 for me) returns an "Internal Server Error"