What is the meaning of 'No bundle URL present' in react-native?

Question

When I run a react-native project, I get a error no bundle URL present , but I don\'t know what mistakes I do, I was very confused.

Answer 1

It has happened to me as well, after restarting my mac. There's a launchPackager terminal window opening up when you run your app on the simulator. I closed that window and terminated the process (I also cloosed the simulator), then run again react-native run-ios and everything works fine.