title: Create api using mulesoft studio
body: <p>How can i create a simple api using mulesoft stodio? I am using the MySql Database and trying to create REST apis and following this tutorial.
  <a href="http://www.mulesoft.org/documentation/display/current/Creating+an+API+for+a+MySQL+Database" rel="nofollow">http://www.mulesoft.org/documentation/display/current/Creating+an+API+for+a+MySQL+Database</a>
  But facing the error
  Error executing graph: ERROR (com.mulesoft.mule.module.datamapper.api.exception.DataMapperExecutionException). Message payload is of type: ArrayList</p>