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googlecodelabs / your-first-pwapp

Code associated with Your First Progressive Web App codelab
https://g.co/codelabs/pwa
Apache License 2.0
637 stars 554 forks source link

Cannot read property 'prompt' of null #209

Open DKhateek1372 opened 4 years ago

DKhateek1372 commented 4 years ago

index.js:124 Uncaught TypeError: deferredPrompt.prompt is not a function at heelo._this.addToHomeScreen (index.js:124) at onClick (index.js:733) at HTMLUnknownElement.callCallback (react-dom.development.js:336) at Object.invokeGuardedCallbackDev (react-dom.development.js:385) at invokeGuardedCallback (react-dom.development.js:440) at invokeGuardedCallbackAndCatchFirstError (react-dom.development.js:454) at executeDispatch (react-dom.development.js:584) at executeDispatchesInOrder (react-dom.development.js:606) at executeDispatchesAndRelease (react-dom.development.js:713) at executeDispatchesAndReleaseTopLevel (react-dom.development.js:722) at forEachAccumulated (react-dom.development.js:694) at runEventsInBatch (react-dom.development.js:739) at runExtractedPluginEventsInBatch (react-dom.development.js:880) at handleTopLevel (react-dom.development.js:5807) at batchedEventUpdates$1 (react-dom.development.js:24368) at batchedEventUpdates (react-dom.development.js:1419) at dispatchEventForPluginEventSystem (react-dom.development.js:5898) at attemptToDispatchEvent (react-dom.development.js:6014) at dispatchEvent (react-dom.development.js:5918) at unstable_runWithPriority (scheduler.development.js:818) at runWithPriority$2 (react-dom.development.js:12130) at discreteUpdates$1 (react-dom.development.js:24384) at discreteUpdates (react-dom.development.js:1442) at dispatchDiscreteEvent (react-dom.development.js:5885)