Master page : object reference not set to an instance of object

Hello,

We have a problem with a SharePoint 2010 Site, this site is suddenly throwing an error in the morning between 7:30 - 8:00 Am

and that error disappear also after that without anybody interaction and the site will get back to be working normally .

this is strange, I have worked on many SharePoint 2010 sites before and never face this issue . 

the error is : object reference not set to an instance of objects .

Stack trace:      at Microsoft.SharePoint.Publishing.WebControls.ConsoleUtilities.IsMasterPageGalleryUrlForSite(Uri uri)    at Microsoft.SharePoint.Publishing.WebControls.ConsoleVisibleUtilities.ConsoleAppliesInCurrentContext()    at Microsoft.SharePoint.Publishing.Internal.WebControls.PublishingRibbon.OnLoad(EventArgs e)    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

May 20th, 2015 2:34am

HI,please check the link below that describes the same issue and the solution,

http://expertsharepoint.blogspot.de/2014/10/server-error-in-application-object.html

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May 20th, 2015 2:46am

I believe there are custom solutions in your site and while loading your site it is not properly loading those solutions from server .Can your please redeploy those solutions and check it again.

Let me know your result.

May 20th, 2015 2:51am

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