Error - Type 'UiPath.Abbyy.Core.FlexiCapture.FCInstance' cannot be serialized

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Hi,
When I using “Create Document Validation Action” Activity and Output of this activity in “Wait For Document Validation Action And Resume” activity then we get the following error "
Type ‘UiPath.Abbyy.Core.FlexiCapture.FCInstance’ cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute. If the type is a collection, consider marking it with the CollectionDataContractAttribute. See the Microsoft .NET Framework documentation for other supported types.

Please help us in resolving this issue.