Report Server Web Service URL not working

I have installed SQL Server 2019 Developer edition on my Windows 11 PC.  And I installed Reporting Services also.  I got the report server to say it is "Report Service Status: Started".  When I try to access the Web Service URL I get an HTTP Error 500.  I can access the Web Portal URL with no problems.  I setup the Service Account to use the built-account "Network Service".  The Database is using the Login: NT Authority\NetworkService.

This is an error I found in the Log file.

"library!DefaultDomain!63cc!

10/29/2022-16:29:50:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: Invalid PBI Configuration, Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: The report server has encountered a configuration error. ;
appdomainmanager!DefaultDomain!69ec!

10/29/2022-16:30:04:: i INFO: Shrink notification can be sent to appdomain 'WindowsService_2' (id = '4') since it is being unloaded now or it is marked for an upcoming unload operation
appdomainmanager!DefaultDomain!69ec!

10/29/2022-16:30:07:: i INFO: Shrink notification can be sent to appdomain 'WindowsService_2' (id = '4') since it is being unloaded now or it is marked for an upcoming unload operation
appdomainmanager!DefaultDomain!69ec!

10/29/2022-16:30:08:: i INFO: Shrink notification can be sent to appdomain 'WindowsService_2' (id = '4') since it is being unloaded now or it is marked for an upcoming unload operation
appdomainmanager!DefaultDomain!69ec!

10/29/2022-16:30:09:: i INFO: Shrink notification can be sent to appdomain 'WindowsService_2' (id = '4') since it is being unloaded now or it is marked for an upcoming unload operation
appdomainmanager!DefaultDomain!42a4!

10/29/2022-16:30:19:: i INFO: Registering AppDomain: type='ReportServer'; id='5'; Name='ReportServer_SSRS_0-1-133115490192369210'
appdomainmanager!DefaultDomain!42a4!

10/29/2022-16:30:19:: i INFO: Creating a new AppDomainLifeCycleManagementEntry for AppDomain id '5' appdomainmanager!DefaultDomain!42a4!

10/29/2022-16:30:19:: i INFO: Appdomain STARTED: id='5'; name='ReportServer_SSRS_0-1-133115490192369210' appdomainmanager!DefaultDomain!42a4!

10/29/2022-16:30:19:: e ERROR: AppDomain ReportServer_SSRS_0 failed to start. Error: Access to the path 'D:\Programs\Microsoft SQL Server Reporting Services\SSRS\ReportServer\RSTempFiles\~AspAccessCheck_78e10b4617060.tmp' is denied.
library!DefaultDomain!42a4!

10/29/2022-16:30:19:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.ReportServerHttpRuntimeInternalException: Failed to create HTTP Runtime, Microsoft.ReportingServices.Diagnostics.Utilities.ReportServerHttpRuntimeInternalException: An internal or system error occurred in the HTTP Runtime object for application domain ReportServer_SSRS_0. ---> System.UnauthorizedAccessException: Access to the path 'D:\Programs\Microsoft SQL Server Reporting Services\SSRS\ReportServer\RSTempFiles\~AspAccessCheck_78e10b4617060.tmp' is denied.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)"

Any ideas what is wrong.