I upgraded to DNN 9.1.1 and when I go to Page Settings I get an error.

Here is the error in the logs:

AbsoluteURL:/API/PersonaBar/Pages/GetPageDetails

DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID:ff3c9c0e-e603-4b9d-9889-41e55976656b

AssemblyVersion:

PortalId:-1

UserId:-1

TabId:-1

RawUrl:

Referrer:

UserAgent:

ExceptionHash:Sqkow59Qy50anfROKvvpdOkCq3Q=

Message:String cannot be of zero length. Parameter name: oldValue

StackTrace:

   at System.String.ReplaceInternal(String oldValue, String newValue)
   at System.String.Replace(String oldValue, String newValue)
   at Dnn.PersonaBar.Pages.Components.PageUrlsController.GetSortedUrls(TabInfo tab, Int32 portalId, Lazy`1 locales, Int32 sortColumn, Boolean sortOrder, Boolean isSystem)
   at Dnn.PersonaBar.Pages.Components.PageUrlsController.GetPageUrls(TabInfo tab, Int32 portalId)
   at Dnn.PersonaBar.Pages.Components.PagesControllerImpl.GetPageUrls(Int32 tabId)
   at Dnn.PersonaBar.Pages.Components.PagesControllerImpl.GetPageSettings(Int32 pageId)
   at Dnn.PersonaBar.Pages.Services.PagesController.GetPageDetails(Int32 pageId)
   at lambda_method(Closure , Object , Object[] )
   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<getexecutor>b__9(Object instance, Object[] methodParameters)
   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments)
   at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Tracing.ITraceWriterExtensions.<tracebeginendasynccore>d__18`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.ApiControllerActionInvoker.<invokeactionasynccore>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Tracing.ITraceWriterExtensions.<tracebeginendasynccore>d__18`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.ActionFilterResult.<executeasync>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Filters.AuthorizationFilterAttribute.<executeauthorizationfilterasynccore>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.ExceptionFilterResult.<executeasync>d__0.MoveNext()</executeasync></executeauthorizationfilterasynccore></executeasync></tracebeginendasynccore></invokeactionasynccore></tracebeginendasynccore></getexecutor>
	

InnerMessage:

InnerStackTrace:

Source:mscorlib

FileName:

FileLineNumber:0

FileColumnNumber:0

Method: