I tried recreating the flow and it also failed for the same reason. But I was able to get a better detailed error message:
when calling the ApiHubsRuntime API: 'Microsoft.Azure.ProcessSimple.Data.Entities.Exceptions.ProcessSimpleDataException: The ApiHubsRuntime API call failed with http status code 'BadGateway' and response content '{ "error": { "code": 502, "source": "msmanaged-na.azure-apim.net", "clientRequestId": "e8980b59-f3aa-4147-bb2f-76e3-e1b55b54", "message": "BadGateway", "innerError": { "status": 502, "message": "L’opération sollicitée est interdite car elle dépasse le seuil d’affichage des listes appliqué par l’administrateur.\r\nclientRequestId: e8980b59-f3aa-4147-bb2f-76e3-e1b55b54\r\nserviceRequestId: a4d0a29f-5030-b000-afb7-e4ae8cada38c", "source": "https://cascades.sharepoint.com/sites/SRV-042-CS_plus/_api/web/GetFolderByServerRelativePath(decodedUrl=@p)?$expand=Folders,Files&@p='%2fsites%2fSRV-042-CS_plus%2fRapports+CS+Confidentiels'", "errors": [ "-2147024860", "Microsoft.SharePoint.SPQueryThrottledException" ] } } }' at Microsoft.Azure.ProcessSimple.Data.DataProviders.AzureResourceManagerDataProvider.<>c__DisplayClass52_0`2.<<CallAzureResourceManager>b__0>d.MoveNext() in X:\bt\1188323\repo\src\processsimple\Roles\ProcessSimple.Data\DataProviders\Services\AzureResourceManagerDataProvider.cs:line 577 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.WindowsAzure.ResourceStack.Common.Algorithms.AsyncRetry.<Retry>d__3`1.MoveNext() in X:\bt\1182269\repo\src\common\core\algorithms\AsyncRetry.cs:line 0 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at Microsoft.WindowsAzure.ResourceStack.Common.Algorithms.AsyncRetry.<Retry>d__3`1.MoveNext() in X:\bt\1182269\repo\src\common\core\algorithms\AsyncRetry.cs:line 171 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Azure.ProcessSimple.Data.DataProviders.AzureResourceManagerDataProvider.<CallAzureResourceManager>d__52`2.MoveNext() in X:\bt\1188323\repo\src\processsimple\Roles\ProcessSimple.Data\DataProviders\Services\AzureResourceManagerDataProvider.cs:line 0'.
Any idea? The french error message reads : "The requested operation is prohibited because it exceeds the list display threshold applied by the administrator".
This library has ~5400 items. I even tried to modify the view to only show folder. No success.
I can browse other libraries easily.