I started using Syncfusion excellent vueJs controls in my web application and I immediately started getting The computed property "fields" is already defined as a prop. error.

Solution:
I was using vee-validate in my application for validation and syncfusion controls were conflicting with my vee-validate library.
Before:
import VeeValidate from 'vee-validate';
Vue.use(VeeValidate);

After:
import VeeValidate from 'vee-validate';
Vue.use(VeeValidate, {fieldsBagName: 'formFields'});