xcode6 - index.io.bundle not found while using iOS simulator to run first React Native app -

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following getting started documentation react native, html page red background containing <p>the requested url /index.ios.bundle not found on server.</p> rendered when hitting cmd+r run first app.

why happening when expected result should homepage rendered index.ios.js?

i had program listening port 8081 used localhost serve bundle (/index.ios.bundle), hence had stop program listening port 8081 in order have react packager working properly.

i figure program listening using following command:

lsof -n -i4tcp:8081 | grep listen


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