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Currently, I am in quite the pickle with getting my flutter app running on Xcode's ios simulator. Prior to these issues it has worked, but now I get this build error after calling flutter run:


Exception: Unable to launch alfarogavin2705-icloud.com.kiwis on 8A6F9997-A0BA-441A-A48E-40503A7E3DA4:
ProcessException: Process exited abnormally:
alfarogavin2705-icloud.com.kiwis: -1

An error was encountered processing the command (domain=FBSOpenApplicationServiceErrorDomain, code=1):
The request to open "alfarogavin2705-icloud.com.kiwis" failed.
The request was denied by service delegate (SBMainWorkspace) for reason: Busy ("Application failed preflight
checks").
Underlying error (domain=FBSOpenApplicationErrorDomain, code=6):
        The operation couldn’t be completed. Application failed preflight checks
        Application failed preflight checks
  Command: /usr/bin/xcrun simctl launch 8A6F9997-A0BA-441A-A48E-40503A7E3DA4 alfarogavin2705-icloud.com.kiwis
  --enable-dart-profiling --enable-checked-mode --verify-entry-points --observatory-port=0
Error launching application on iPhone 11 Pro Max.

I honestly don't know what is causing this error.

user12985516
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  • have you tried to restart the simulator? https://stackoverflow.com/questions/39495620/xcode-8-error-denied-by-service-delegate-sbmainworkspace – Filipe Piletti Plucenio Sep 30 '20 at 13:41
  • You might want to try running the command from your error log directly in Terminal (possibly with a verbose flag) and then see if you can get a better understanding of what's going wrong. – PDK Oct 06 '20 at 19:08
  • I get this error when I add the 'Scan' library. When I remove the library, i don't get the error anymore. Did you find any possible solution for this kind of error yet? – Texv Jun 18 '22 at 03:04

1 Answers1

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I faced the same issue. I think it is because of some caching issues. Close and open another simulator device works for me.

flutteria
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