trying to install an application on virtual server 2019 DC

CBS logs show SXS assembly missing

DISM.exe /Online /Cleanup-image /Restorehealth completes
sfc /scannow finds corrupt files and says it repaired them


final part of cbs log shown below

2021-02-16 22:02:16, Error CBS Failed to process single phase execution. [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
2021-02-16 22:02:16, Info CBS WER: Generating failure report for package: Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~10.0.17763.1, status: 0x80073701, failure source: Resolve, start state: Installed, target state: Installed, client id: DISM Package Manager Provider
2021-02-16 22:02:16, Info CBS Not able to query DisableWerReporting flag. Assuming not set... [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2021-02-16 22:02:16, Info CBS Added C:\Windows\Logs\CBS\CBS.log to WER report.
2021-02-16 22:02:16, Info CBS Added C:\Windows\Logs\CBS\CbsPersist_20210216094753.log to WER report.
2021-02-16 22:02:16, Info CBS Added C:\Windows\Logs\CBS\CbsPersist_20210216040357.cab to WER report.
2021-02-16 22:02:16, Info CBS Added C:\Windows\Logs\CBS\CbsPersist_20210215170733.cab to WER report.
2021-02-16 22:02:16, Info CBS Added C:\Windows\Logs\CBS\CbsPersist_20210215064125.cab to WER report.
2021-02-16 22:02:16, Info CBS Added C:\Windows\Logs\CBS\CbsPersist_20210214081842.cab to WER report.
2021-02-16 22:02:16, Info CBS Not able to add %windir%\winsxs\poqexec.log to WER report. [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2021-02-16 22:02:16, Info CBS Not able to add %windir%\winsxs\pending.xml to WER report. [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2021-02-16 22:02:16, Info CBS Not able to add %windir%\winsxs\pending.xml.bad to WER report. [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2021-02-16 22:02:16, Info CBS Reboot mark cleared
2021-02-16 22:02:16, Info CBS Winlogon: Simplifying Winlogon CreateSession notifications
2021-02-16 22:02:16, Info CBS Winlogon: Deregistering for CreateSession notifications
2021-02-16 22:02:16, Info CBS FinalCommitPackagesState: Started persisting state of packages
2021-02-16 22:02:16, Info CBS FinalCommitPackagesState: Completed persisting state of packages
2021-02-16 22:02:16, Info CBS Enabling LKG boot option
2021-02-16 22:02:16, Info CBS Exec: Will not run corruption repair because no store corruption found.
2021-02-16 22:02:16, Info CBS Exec: Processing complete. Session: 30868563_790468642, Package: Microsoft-Windows-Foundation-Package~31bf3856ad364e35~amd64~~10.0.17763.1, Identifier: Windows Foundation [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
2021-02-16 22:02:16, Error CBS Failed to perform operation. [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
2021-02-16 22:02:16, Info CBS Session: 30868563_790468642 finalized. Reboot required: no [HRESULT = 0x80073701 - ERROR_SXS_ASSEMBLY_MISSING]
2021-02-16 22:02:16, Info CBS Failed to FinalizeEx using worker session [HRESULT = 0x80073701]

If I never did anything I'd never done before , I'd never do anything.....