I am getting a really strange error currently for one sitecore user, randomly a server error appears - However, the user can refresh the page and the page loads without an error (according to the user). I'm not sure what this error would be relating to, would anyone have any input?
Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.] Sitecore.Data.Database.ApplySecurity(Item[] items) +112
Sitecore.Data.Database.SelectItems(String query) +252
Sitecore.Shell.Applications.WebEdit.Commands.OpenMyItems.GetHeader(CommandContext context, String header) +188
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderSmallButton(HtmlTextWriter output, Item button, CommandContext commandContext) +307
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderButton(HtmlTextWriter output, Item button, CommandContext commandContext) +732
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderChunk(HtmlTextWriter output, Item chunk, CommandContext commandContext) +330
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderChunk(HtmlTextWriter output, Item chunk, CommandContext commandContext, Boolean isContextual, String id) +204
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderChunk(HtmlTextWriter output, Item chunk, CommandContext commandContext, Boolean isContextual) +242
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderChunks(HtmlTextWriter output, Item strip, CommandContext commandContext, Boolean isContextual) +442
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderStrips(HtmlTextWriter output, Item ribbon, Boolean isContextual, ListString visibleStripList) +800
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.RenderStrips(HtmlTextWriter output, Item defaultRibbon, Item contextualRibbon, ListString visibleStripList) +215
Sitecore.Web.UI.WebControls.Ribbons.Ribbon.Render(HtmlTextWriter output) +610
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +149
Sitecore.Web.HtmlUtil.RenderControl(Control ctl) +74
Sitecore.Shell.Applications.WebEdit.WebEditRibbonForm.RenderRibbon(Item item) +603
Sitecore.Shell.Applications.WebEdit.WebEditRibbonForm.OnLoad(EventArgs e) +1238[TargetInvocationException: Exception has been thrown by the target of an invocation.] System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +76
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +193 System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +35 Sitecore.Web.UI.Sheer.ClientPage.OnLoad(EventArgs e) +337 System.Web.UI.Control.LoadRecursive() +71
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3178
