Basic Setup query


I am new to flowable and like to installed in my machine with apache tomcat8 and ubuntu 16.04.

the flowable-idm and flowable-admin was successfully deployed. But unable to deploy flowable-modeler, flowable-rest, and flowable-task.

the below error appear while deploy,

FAIL - Application at context path /flowable-rest could not be started
FAIL - Encountered exception org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/flowable-rest]]

Please anyone help on this?

With best regards,