Error when Running Vaadin Application

Hi everyone, I am new to Vaadin. After importing some code for Vaadin from Github, I am getting this error that is causing me to not be able to run my application in IntelliJ.
Does anyone know how to fix this error?
Vaadin_Error.txt (44.7 KB)

Looks like your Contact class’ properties aren’t matching with the insert script provided within the resources folder for the test data