We are facing problems in executing query rule in Appian 6.6.1 environment which

We are facing problems in executing query rule in Appian 6.6.1 environment which is Linux based environment. The error log is as below:-

Caused by: com.appiancorp.suiteapi.common.exceptions.ExpressionException: The passed parameter(s) are incorrect, or the function 'queryruleexec' may be unavailable.
at com.appiancorp.suiteapi.expression.AbstractExpressionEvaluationServiceImpl.evaluate(AbstractExpressionEvaluationServiceImpl.java:101)
at sun.reflect.GeneratedMethodAccessor3104.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.appiancorp.services.ServiceManager$ServiceInvocationHandler.invoke(ServiceManager.java:475)
at $Proxy261.evaluate(Unknown Source)
at com.appiancorp.process.expression.Express...

OriginalPostID-30216

OriginalPostID-30216