ios - After Removing App Extension Still Get App Installation Failed Error- This app contains an app extension with an illegal bundle identifier -

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"this app contains app extension illegal bundle identifier. app extension bundle identifiers must have prefix consisting of containing application's bundle identifier followed '.'."

i used create widget extension in project, after while deleted it, today tried run app on iphone got error.

it works on simulator. , try install on other iphones works well. guess physical device specific problem. tried delete , reinstall app , restart device did not work, , checked again there no extension target or file in project, still getting same error.

i had same problem. turns out need clean project , build folder shortcut command + option + shift + k


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