2015/12/15 09:40:04 ERROR - jmeter.util.BeanShellInterpreter: Error invoking bsh method: eval	Sourced file: inline evaluation of: ``request.setCharacterEncoding("UTF-8"); prev.setDataEncoding("UTF-8"); ;'' : Attempt to resolve method: setCharacterEncoding() on undefined variable or class name: request

2015/12/15 09:40:04 WARN  - jmeter.extractor.BeanShellPostProcessor: Problem in BeanShell script org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval	Sourced file: inline evaluation of: ``request.setCharacterEncoding("UTF-8"); prev.setDataEncoding("UTF-8"); ;'' : Attempt to resolve method: setCharacterEncoding() on undefined variable or class name: request