Error ‭[2]‬

Web Part Error: An error occurred while setting the value of this property: Microsoft.Office.Server.Search.WebControls.RefinementWebPart:FilterCategoriesDefinition - Exception has been thrown by the target of an invocation.

 Error ‭[1]‬

Web Part Error: An error has occurred.

 Error ‭[3]‬

Web Part Error: One of the properties of the Web Part has an incorrect format. Microsoft SharePoint Foundation cannot deserialize the Web Part. Check the format of the properties and try again.