Execution generate-tests of goal com.consol.citrus.mvn:citrus-maven-plugin:2.8.0:generate-tests failed: String index out of range: -216

[venkat-in]

When i execute sample-wsdl file by giving command mvn clean verify, test generation is failing with message
"[ERROR] Failed to execute goal com.consol.citrus.mvn:citrus-maven-plugin:2.8.0:generate-tests (generate-tests) on project citrus-java-sample-wsdl: Execution generate-tests of goal com.consol.citrus.mvn:citrus-maven-plugin:2.8.0:generate-tests failed: String index out of range: -216 -> [Help 1]"

Please help me how to resolve this issue.