This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I have created a sample application with MySQL as a backend. I did all the configurations for MySQL like changing the values in DataSource.groovy file. When i run the application i get an error lik this