MaintenanceTool error QNetworkReply::InternalServerError "Invalid data." after registering RHEL Server with Subscription Manager

  • I haven't been able to find a solution to this anywhere else. I have a new installation of RHEL 7.8 Server. Before installing anything else I install Qt using "". When I complete the Qt installation, I can still run Qt's MaintenanceTool and look at other packages I may want to install. At that point, I bring up RHEL's Subscription Manager and attach a subscription. I've only attached the subscription at this point. I then go back and run Qt's MaintenanceTool again and now I get

    Warning: Network error: [ QNetworkReply::InternalServerError ] "Invalid data."


    I can no longer progress past this page.

    Has anyone else dealt with this? I've done several iterations of the RHEL7 install to narrow it down to it occurring right after the subscription has been attached.

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