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Latest CMS upgrade error - An item with the same key has already been added in Notifications.Feature.Internal
Its a known bug now.
Workaround: downgraded to v 11.20.2 where it works
or got this from DeveloperSupport:
1. Run the query below:
select * from tblNotificationSubscription where SubscriptionKey ='feature://notification/' order by UserName
2. You may find there was one "duplicate" where one email started with a whitespace and one not.
3. Please set Active = 0 for one of the duplicate records, the issue will be gone.
Feb 04, 2021 15:02
Issue is still present in 11.20.4.. Is it one that is being worked on? If it is being caused by content then how do you fix it through the CMS?
Feb 18, 2021 16:31
CMS bug is CMS-18303
But i cant see it is official yet.
If in azure you can send it to dxc support, so they can do the db hack it before the release, then it works.
You can also remove all posts in tblNotificationSubscription which starts with whitespace in email, thats also an options.
Regards!
Feb 19, 2021 9:32
The script needed to update any identified active users with leading or trailing whitespace can be
UPDATE tblNotificationSubscription
SET Active = 0
WHERE pkID='[name of identified id's]';
Mar 11, 2021 22:13
Just upgraded to latest CMS 11.20.3 from 2 feb.
seems an error in
[ArgumentException: An item with the same key has already been added.] System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +60 System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +14338200 System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) +302 EPiServer.Cms.Shell.UI.Notifications.Feature.Internal.<SubscribeAsync>d__12.MoveNext() +1092 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() +32 System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +62 EPiServer.Cms.Shell.CmsModule.CreateViewModel(ModuleTable moduleTable, IClientResourceService clientResourceService) +645 System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +241 System.Linq.Buffer`1..ctor(IEnumerable`1 source) +498 System.Linq.<GetEnumerator>d__1.MoveNext() +118 System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) +196 EPiServer.Shell.UI.Web.Resources.ModuleDependencySorter.GetStartupModules(IEnumerable`1 modules, String startupModule) +321 ASP.episerver_shell_views_shared_bootstrapper_aspx.__Render__control5(HtmlTextWriter __w, Control parameterContainer) in C:\webb\x\EPiServer\Shell\Views\Shared\Bootstrapper.aspx:34 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +117 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132 ASP.episerver_shell_views_shared_sleek_master.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\webb\x\EPiServer\Shell\Views\Shared\Sleek.Master:41I will try to downgrade ...