spring - Trouble in getting rid of warning in glassfish server -

hi tried run spring jpa application in glassfish server application , running everytime db query getting accessed below warning displayed in logs:

javax.enterprise.resource.resourceadapter.com.sun.enterprise.resource.pool.resizer

error while resizing pool mediatrackpool. exception : web9031: webappclassloader unable load resource [com.mysql.jdbc.sqlerror], because has not yet been started, or stopped.

though there no problem app running everytime warning displayed. can 1 me in getting rid of same.