I've sent off the feedback. This is the error in the log.
C23-92E3F82446DC","IOC":"YES","UpdateName":"Microsoft Excel Update 16.98.0 (25042727)","Operation":"Begin","IsSilent":"NO","AppID":"XCEL2019","UpdatePkg":"Excel_16.96.25042021_to_16.98.25042727_BinaryDelta.pkg","NeedVerify":"YES"}
[Microsoft Update Assistant] ErrorsAndWarnings: {"Error":"Failed with reply: Unexpected error occurred with termination status code: 1","UpdateID":"C9BB0F3E-0046-4F09-BC23-92E3F82446DC","Operation":"Install","AppID":"XCEL2019"}
[Microsoft Update Assistant] InstallUpdatesTask.UpdateStatus: {"UpdateID":"C9BB0F3E-0046-4F09-BC23-92E3F82446DC","AppNameChanged":"NO","IOC":"YES","UpdateName":"Microsoft Excel Update 16.98.0 (25042727)","Operation":"End","IsSilent":"NO","AppID":"XCEL2019","BundleVersion":"16.96.25042021","UpdatePkg":"Excel_16.96.25042021_to_16.98.25042727_BinaryDelta.pkg","NeedVerify":"YES","Success":"NO"}
[Microsoft Update Assistant] InstallUpdatesTask.RemoveClone: {"AppNameChanged":"NO","UpdateID":"C9BB0F3E-0046-4F09-BC23-92E3F82446DC","UpdatePkg":"","AppID":"XCEL2019","Success":"YES","UpdateName":""}
[Microsoft Update Assistant] Update.InstallCleanUpForApp: {"AppID":"XCEL2019","UpdateID":"C9BB0F3E-0046-4F09-BC23-92E3F82446DC","AppState":"16"}