[Progress Communities] [Progress OpenEdge ABL] Forum Post: System.InvalidOperationException. Sequence contains more than one matching element

[joyanta.sen]

Hello All, I am getting the following exception while trying to edit one of the date field in the News item and publish that item. Type : System.InvalidOperationException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : Sequence contains more than one matching element Source : Telerik.Sitefinity Help link : Data : System.Collections.ListDictionaryInternal TargetSite : System.String MessageWorkflow(System.Guid, System.Type, System.String, System.String, Boolean, System.Collections.Generic.Dictionary`2[System.String,System.String]) HResult : -2146233079 Stack Trace : at Telerik.Sitefinity.Workflow.WorkflowManager.MessageWorkflow(Guid itemId, Type itemType, String providerName, String operationName, Boolean isCheckedOut, Dictionary`2 contextBag) at Telerik.Sitefinity.Modules.ContentServiceBase`5.SaveContentUsingWorkflow(ContentItemContext`1 context, String parentId, String providerName, String workflowOperation) at Telerik.Sitefinity.Modules.ContentServiceBase`5.SaveContent(ContentItemContext`1 content, String contentId, String providerName, String version, Boolean published, Boolean checkOut, String workflowOperation) at SyncInvokeSaveContent(Object , Object[] , Object[] ) at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet) Additional Info: MachineName : TimeStamp : 11/1/2019 4:19:48 PM FullName : Telerik.Sitefinity.Utilities, Version=11.1.6800.0, Culture=neutral, PublicKeyToken=b28c218413bdf563 AppDomainName : /LM/W3SVC/20/ROOT-1-132170690305083931 ThreadIdentity : WindowsIdentity : IIS APPPOOL\abc.org Requested URL : abc.com/.../ Category: ErrorLog Priority: 0 EventId: 90000 Severity: Error Title:Enterprise Library Exception Handling Machine: App Domain: /LM/W3SVC/20/ROOT-1-132170690305083931 ProcessId: 9388 Process Name: c:\windows\system32\inetsrv\w3wp.exe Thread Name: Win32 ThreadId:10948 Extended Properties:

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