Getting error then opening host settings after upgrading to dnn 7.00.4

Error: Host Settings is currently unavailable.DotNetNuke.Services.Exceptions.ModuleLoadException: Value cannot be null. Parameter name: key ---> System.ArgumentNullException: Value cannot be null. Parameter name: key at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at DotNetNuke.Modules.Admin.Host.HostSettings.BindHostDetails() at DotNetNuke.Modules.Admin.Host.HostSettings.BindData() at DotNetNuke.Modules.Admin.Host.HostSettings.OnLoad(EventArgs e) --- End of inner exception stack trace ---

There were no errors or warnings during the upgrade process and the site works fine, but with out access to host settings i can not work with it.

Need advice of what to do to resolve this error.