AE - Web Service Response Expression Tester error cannot be cast java.lang.ClassCastException: [Ljava.lang.String; cannot be cast to java.lang.String

Document ID : KB000111008
Last Modified Date : 27/08/2018
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Issue:
While testing "Response Expression Tester" for one REST Web Service job but it is giving the below error:
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Error: there was a problem with parsing...
java.lang.RuntimeException: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassCastException: [Ljava.lang.String; cannot be cast to java.lang.String
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Environment:
WebService Rest 4.4.0
Resolution:
This issue is a bug.
- Permanent fix: in the next release RA.Web.Service.REST 4.4.2 ( Planned release date: 2018-10-23)
- Workaround for this issue: Deactivate the "Use Array" under response. Set it at false.