Everytime I submit a zone, It display this error \'Uncaught Error: A cross-origin error was thrown. React doesn\'t have access to the actual error object in development\' It
I also got the same issue on sandbox while doing code with react-redux. Whenever you directly call this.props.anymethod() it will revert you with this error. Try to handle it locally and then from within method hit the props method.
Something like this:
I solved cross-origin problem in this scenario