Flutter web app shows blank screen when publishing it - flutter

Question

I am working on a Flutter project.
I need to create a web app from the project.
The web app is launched at https://appcapenergy.com/web
Today I have made an update from the project, I have published the iOS app and the Android app to the stores, Apple App Store and Google Play.
Now I have build the web app, but it is not working.
Launching the web app locally or in the server it only shows a blank screen.
Here you have the browser inspection Console log:
Uncaught (in promise) TypeError: Failed to register a ServiceWorker for scope ('http://localhost:61121/') with script ('http://localhost:61121/firebase-messaging-sw.js'): A bad HTTP response code (404) was received when fetching the script.
main.dart.js:72 Uncaught TypeError: Cannot read properties of null (reading 'removeChild')
at HTMLDocument.<anonymous> (main.dart.js:72:22)
at client.js:24535:40
at _wrapJsFunctionForAsync_closure.$protected (client.js:3471:15)
at _wrapJsFunctionForAsync_closure.call$2 (client.js:11541:12)
at _awaitOnObject_closure.call$1 (client.js:11529:32)
at StaticClosure._rootRunUnary (client.js:3833:18)
at _CustomZone.runUnary$2$2 (client.js:12941:39)
at _Future__propagateToListeners_handleValueCallback.call$0 (client.js:11973:51)
at Object._Future__propagateToListeners (client.js:3613:93)
at _Future._completeWithValue$1 (client.js:11799:9)
at _AsyncAwaitCompleter.complete$1 (client.js:11512:14)
at Object._asyncReturn (client.js:3443:17)
at client.js:8734:24
at _wrapJsFunctionForAsync_closure.$protected (client.js:3471:15)
at _wrapJsFunctionForAsync_closure.call$2 (client.js:11541:12)
at _awaitOnObject_closure.call$1 (client.js:11529:32)
at StaticClosure._rootRunUnary (client.js:3833:18)
at _CustomZone.runUnary$2$2 (client.js:12941:39)
at _Future__propagateToListeners_handleValueCallback.call$0 (client.js:11973:51)
at Object._Future__propagateToListeners (client.js:3613:93)
at _Future._completeWithValue$1 (client.js:11799:9)
at _AsyncAwaitCompleter.complete$1 (client.js:11512:14)
at Object._asyncReturn (client.js:3443:17)
at client.js:25007:24
at _wrapJsFunctionForAsync_closure.$protected (client.js:3471:15)
at _wrapJsFunctionForAsync_closure.call$2 (client.js:11541:12)
at _awaitOnObject_closure.call$1 (client.js:11529:32)
at StaticClosure._rootRunUnary (client.js:3833:18)
at _CustomZone.runUnary$2$2 (client.js:12941:39)
at _Future__propagateToListeners_handleValueCallback.call$0 (client.js:11973:51)
at Object._Future__propagateToListeners (client.js:3613:93)
at _Future._completeWithValue$1 (client.js:11799:9)
at _AsyncAwaitCompleter.complete$1 (client.js:11512:14)
at Object._asyncReturn (client.js:3443:17)
at client.js:24984:24
at _wrapJsFunctionForAsync_closure.$protected (client.js:3471:15)
at _wrapJsFunctionForAsync_closure.call$2 (client.js:11541:12)
at _awaitOnObject_closure.call$1 (client.js:11529:32)
at StaticClosure._rootRunUnary (client.js:3833:18)
at _CustomZone.runUnary$2$2 (client.js:12941:39)
at _Future__propagateToListeners_handleValueCallback.call$0 (client.js:11973:51)
at Object._Future__propagateToListeners (client.js:3613:93)
at _Future._completeWithValue$1 (client.js:11799:9)
at _Future__asyncCompleteWithValue_closure.call$0 (client.js:11901:18)
at StaticClosure._rootRun (client.js:3818:16)
at _CustomZone.run$1$1 (client.js:12933:39)
at _CustomZone.runGuarded$1 (client.js:12876:14)
at _CustomZone_bindCallbackGuarded_closure.call$0 (client.js:13071:25)
at Object._microtaskLoop (client.js:3677:24)
at StaticClosure._startMicrotaskLoop (client.js:3683:11)
at _AsyncRun__initializeScheduleImmediate_internalCallback.call$1 (client.js:11417:9)
at invokeClosure (client.js:1277:26)
at MutationObserver.<anonymous> (client.js:1296:18)
​ This app is linked to the debug service: ws://127.0.0.1:61185/AiCArEXaM00=/ws
js_primitives.dart:30 Flutter Web Bootstrap: Programmatic
errors.dart:266 Uncaught (in promise) Error: Unsupported operation: Platform._operatingSystem
at Object.throw_ [as throw] (errors.dart:266:49)
at _Platform._operatingSystem (io_patch.dart:244:5)
at get operatingSystem [as operatingSystem] (platform_impl.dart:56:40)
at get _operatingSystem (platform.dart:64:45)
at desc.get [as _operatingSystem] (operations.dart:839:8)
at get isIOS (platform.dart:153:47)
at desc.get [as isIOS] (operations.dart:839:8)
at MethodChannelStripeFactory.create (method_channel_stripe.dart:479:33)
at get _instance (stripe_platform_interface.dart:12:72)
at desc.get [as _instance] (operations.dart:839:8)
at get instance [as instance] (stripe_platform_interface.dart:17:41)
at get _platform [as _platform] (stripe.dart:535:35)
at stripe.Stripe.__.markNeedsSettings (stripe.dart:542:20)
at set publishableKey [as publishableKey] (stripe.dart:24:14)
at main$ (main.dart:38:10)
at main$.next (<anonymous>)
at runBody (async_patch.dart:84:54)
at Object._async [as async] (async_patch.dart:123:5)
at main$ (main.dart:34:5)
at web_entrypoint.dart:24:31
at Object._checkAndCall (operations.dart:334:14)
at Object.dcall (operations.dart:339:39)
at initialization.dart:77:15
at Generator.next (<anonymous>)
at async_patch.dart:45:50
at _RootZone.runUnary (zone.dart:1653:54)
at _FutureListener.thenAwait.handleValue (future_impl.dart:147:18)
at handleValueCallback (future_impl.dart:766:44)
at _Future._propagateToListeners (future_impl.dart:795:13)
at [_completeWithValue] (future_impl.dart:566:5)
at async._AsyncCallbackEntry.new.callback (future_impl.dart:639:7)
at Object._microtaskLoop (schedule_microtask.dart:40:11)
at _startMicrotaskLoop (schedule_microtask.dart:49:5)
at async_patch.dart:166:15
throw_ # errors.dart:266
_operatingSystem # io_patch.dart:244
get operatingSystem # platform_impl.dart:56
get _operatingSystem # platform.dart:64
desc.get # operations.dart:839
get isIOS # platform.dart:153
desc.get # operations.dart:839
create # method_channel_stripe.dart:479
get _instance # stripe_platform_interface.dart:12
desc.get # operations.dart:839
get instance # stripe_platform_interface.dart:17
get _platform # stripe.dart:535
markNeedsSettings # stripe.dart:542
set publishableKey # stripe.dart:24
main$ # main.dart:38
runBody # async_patch.dart:84
_async # async_patch.dart:123
main$ # main.dart:34
(anonymous) # web_entrypoint.dart:24
_checkAndCall # operations.dart:334
dcall # operations.dart:339
(anonymous) # initialization.dart:77
(anonymous) # async_patch.dart:45
runUnary # zone.dart:1653
handleValue # future_impl.dart:147
handleValueCallback # future_impl.dart:766
_propagateToListeners # future_impl.dart:795
[_completeWithValue] # future_impl.dart:566
(anonymous) # future_impl.dart:639
_microtaskLoop # schedule_microtask.dart:40
_startMicrotaskLoop # schedule_microtask.dart:49
(anonymous) # async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise # async_patch.dart:164
_scheduleImmediate # async_patch.dart:136
_scheduleAsyncCallback # schedule_microtask.dart:69
_rootScheduleMicrotask # zone.dart:1458
scheduleMicrotask # zone.dart:1673
[_asyncCompleteWithValue] # future_impl.dart:638
[_asyncComplete] # future_impl.dart:598
runBody # async_patch.dart:108
_async # async_patch.dart:123
initializeEngineUi # initialization.dart:224
(anonymous) # initialization.dart:75
runBody # async_patch.dart:84
_async # async_patch.dart:123
(anonymous) # initialization.dart:71
_checkAndCall # operations.dart:334
callMethod # operations.dart:398
dsend # operations.dart:402
(anonymous) # app_bootstrap.dart:72
runBody # async_patch.dart:84
_async # async_patch.dart:123
(anonymous) # app_bootstrap.dart:70
_checkAndCall # operations.dart:334
dcall # operations.dart:339
ret # js_patch.dart:413
(anonymous) # app_bootstrap.dart:68
_checkAndCall # operations.dart:334
dcall # operations.dart:339
ret # js_patch.dart:413
(anonymous) # web:53
I need your help to try to solve the issue

Answer 1

Please do this!
I run this in the console of my navigator (Chrome), and no error message anymore :
navigator.serviceWorker.getRegistrations().then(function(registrations) { for(let registration of registrations) { registration.unregister() } })
and check this link
https://www.fluttercampus.com/guide/163/how-to-fix-blank-white-page-from-hosted-flutter-web-app/#:~:text=html%20with%20code%20editor%2C%20you,attribute%20to%20solve%20this%20problem