"Invoke Performer workflow: The given key was not present in the dictionary" error in uipath

I have attched a file using Uipath where I am trying to perform RPA Challange using Dispatcher and Performer concept in uipath.
URL is getting opened, all the data is loaded to Queue and then in performer workflow I am getting this error “Invoke Performer workflow: The given key was not present in the dictionary.”
Please let me know where am I making the mistake.RPA Challange.zip (32.4 KB)

@Anamika15 Can you provide a delay of 10 seconds after Dispatcher and then check if it Works ?

Or If you still have Queue Items in the Queue in New State, Just Execute Only the Performer Workflow.

After running only performer workflow, I am getting the below error:

@Anamika15 I guess I found the Error

@Anamika15 Go to Dispatcher. In Add Queue Item Activity, Check the ItemInformation property, you have added a Space to the "Last Name " and Hence it can’t find the “Last Name” as a Key in the Performer

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