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Application Error when loging in

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    I did truncate the dbo.eventlog but still I am getting this error. No changes were made to the site that could have caused that error. There was however an interuption to database ( hosing center issue) 2 days ago which may be related.   

    I tried to look in the log but not sure I can identify what I am looking at. 

    2024-05-10 14:42:31.613-07:00 [W37][D:2][T:35][ERROR] DotNetNuke.Services.Exceptions.Exceptions - DotNetNuke.Services.Exceptions.PageLoadException: Error getting value from 'Parent' on 'Dnn.PersonaBar.Library.Model.MenuItem'. ---> Newtonsoft.Json.JsonSerializationException: Error getting value from 'Parent' on 'Dnn.PersonaBar.Library.Model.MenuItem'. ---> System.NullReferenceException: Object reference not set to an instance of an object.
       at Dnn.PersonaBar.Library.Repository.PersonaBarRepository.<>c__DisplayClass5_0.<GetMenuItem>b__0(MenuItem m)
       at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
       at Dnn.PersonaBar.Library.Repository.PersonaBarRepository.GetMenuItem(Int32 menuId)
       at Dnn.PersonaBar.Library.Model.MenuItem.get_Parent()
       at GetParent(Object )
       at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)
       --- End of inner exception stack trace ---
       at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue(Object target)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues(JsonWriter writer, Object value, JsonContainerContract contract, JsonProperty member, JsonProperty property, JsonContract& memberContract, Object& memberValue)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeList(JsonWriter writer, IEnumerable values, JsonArrayContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty)
       at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType)
       at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType)
       at Newtonsoft.Json.Linq.JToken.FromObjectInternal(Object o, JsonSerializer jsonSerializer)
       at Newtonsoft.Json.Linq.JObject.FromObject(Object o, JsonSerializer jsonSerializer)
       at Dnn.PersonaBar.Library.Containers.PersonaBarContainer.GetConfigration(PortalSettings portalSettings)
       at Dnn.PersonaBar.Library.Containers.PersonaBarContainer.GetConfiguration()
       at ASP.desktopmodules_admin_dnn_personabar_usercontrols_personabarcontainer_ascx.__RenderPersonaBarPanel(HtmlTextWriter __w, Control parameterContainer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer)
       at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at DotNetNuke.Framework.PageBase.Render(HtmlTextWriter writer)
       at DotNetNuke.Framework.DefaultPage.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Page.<ProcessRequestMainAsync>d__523.MoveNext()
       --- End of inner exception stack trace ---

     






    Veteran Member





      What version of DNN are you running? I may have a clue, but it depends on the version of DNN.

      Depending on the version, you want to be careful of simply truncating the EventLog table. It is more complicated than that starting at DNN 7.4.0. There are actually three tables that handle event logs starting in DNN 7.4.0.

      David Poindexter


      Creator:







      Senior Member





        Just confirming that David's advice about being careful to not run destructive operations on the database, unless you're really well-versed in what the DNN API does.  You could literally break the website.

        In this case, the error you posted is pretty specific to a core operation in DNN - and, it's not one that I'd characterize as an error that any of us should be seeing.  It sounds like there may have been more modifications to the core files and/or database in your site.  

        Do you happen to have a working back up of the site from a previous date?  If it were me, I'd start comparing the two instances (file system and database) to determine what changed.  This sounds like something pretty bad, actually.  

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