An error occured while attaching module (Dynamicweb.Frontend.Content)

System.NullReferenceException: Object reference not set to an instance of an object.
   at Co3.Redirect.BrowserLanguage.CustomModules.RedirectBrowserLanguage.RedirectBrowserLanguage.GetContent() in c:\Developer\GIT\co3-Dynamicweb-modules\Co3.Redirect.BrowserLanguage\Co3.Redirect.BrowserLanguage\CustomModules\RedirectBrowserLanguage\RedirectBrowserLanguage.cs:line 131
   at Dynamicweb.Frontend.Content.GetModule(DataRow& ParagraphRow)