Apache oozie Launcher ERROR - apache

Question

I am want to run sqoop action using apache oozie but it always giving me error:
Launcher ERROR, reason: Main class [org.apache.oozie.action.hadoop.SqoopMain], main() threw exception, null
my workflow.xml is:
<workflow-app name="Datashop-Core-Sqoop" xmlns="uri:oozie:workflow:0.1">
<!-- <start to="inputAvailableCheckDecision"/>
<decision name="inputAvailableCheckDecision">
<switch>
<case to="sqoopAction">
${sqoopInputRecordCount gt minRequiredRecordCount}
</case>
<default to="end"/>
</switch>
</decision> -->
<start to="sqoopAction"/>
<action name="sqoopAction">
<sqoop xmlns="uri:oozie:sqoop-action:0.2">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
<property>
<name>oozie.libpath</name>
<value>${oozieLibPath}</value>
</property>
</configuration>
<command>import --connect jdbc:mysql://${mysqlServer}/${mysqlServerDB} --username ${mysqlServerDBUID} --password ${mysqlServerDBPwd} --tabltable ${mysqlTable} -m 1 --target-dir ${targetDir}</command>
</sqoop>
<ok to="end"/>
<error to="killJob"/>
</action>
<kill name="killJob">
<message>"Killed job due to error: ${wf:errorMessage(wf:lastErrorNode())}"</message>
</kill>
<end name="end" />
</workflow-app>
this always throwing sqoopmain class exception which is finally treating as Error:
#sqoopAction] ERROR is considered as FAILED for SLA
In some stack question i found that external library is need to be included with <file>
so i changed my workflow.xml and add a line below <command> tag:
<file>${oozieLibPath}/sqoop/mysql-connector-java-5.1.37-bin.jar#mysql-connector-java-5.1.37-bin.jar</file>
But still same error is producing what may be the reason for this error. is there any thing else i need to configure?