Resolved: Duplicate item gave me the following error

Server Error in '/' Application.

An item with the same key has already been added.

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.ArgumentException: An item with the same key has already been added.

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:

[ArgumentException: An item with the same key has already been added.]
   System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +13908159
   Dynamicweb.Admin.Edit2.LoadItemLayoutsFromForm() +686
   Dynamicweb.Admin.Edit2.Page_Load(Object sender, EventArgs e) +1298
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3178

Developer forum

Resolved: Item with the same key has already been added

Resolved: Duplicate item gave me the following error

Server Error in '/' Application.

An item with the same key has already been added.

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