node.js - react-native init error with nodejs -

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i got error when use command react-native init hello in nodejs

events.js:141       throw er; // unhandled 'error' event       ^  error: spawn npm enoent     @ exports._errnoexception (util.js:855:11)     @ process.childprocess._handle.onexit (internal/child_process.js:178:32)     @ onerrornt (internal/child_process.js:344:16)     @ nexttickcallbackwith2args (node.js:455:9)     @ process._tickcallback (node.js:369:17)


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