Flutter : iOS build failed

I'm new to iOS development using flutter and just recently switch from android to iOS in flutter.

I got below error when the project was run for first time in mac, it does not gives any error on Android and runs successfully.

Failed to build iOS app
Error output from Xcode build:
↳
    2022-03-19 11:43:32.804 xcodebuild[9398:77766] Requested but did not find extension point with identifier
    Xcode.IDEKit.ExtensionSentinelHostApplications for extension Xcode.DebuggerFoundation.AppExtensionHosts.watchOS of plug-in
    com.apple.dt.IDEWatchSupportCore
    2022-03-19 11:43:32.804 xcodebuild[9398:77766] Requested but did not find extension point with identifier
    Xcode.IDEKit.ExtensionPointIdentifierToBundleIdentifier for extension
    Xcode.DebuggerFoundation.AppExtensionToBundleIdentifierMap.watchOS of plug-in com.apple.dt.IDEWatchSupportCore
    ** BUILD FAILED **


Xcode's output:
↳
    Writing result bundle at path:
        /var/folders/7x/7bvzz8356b79dpq_bq4cr_p40000gp/T/flutter_tools.YZ6rQ9/flutter_ios_build_temp_dirYwEDOD/temporary_xcresult_b
        undle

    /Users/icebit-imac3/flutter/.pub-cache/hosted/pub.dartlang.org/location-4.3.0/ios/Classes/LocationPlugin.m:176:13: warning:
    'UIAlertView' is deprecated: first deprecated in iOS 9.0 - UIAlertView is deprecated. Use UIAlertController with a
    preferredStyle of UIAlertControllerStyleAlert instead [-Wdeprecated-declarations]
                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Location is Disabled"
                ^
    In module 'UIKit' imported from /Users/icebit-imac3/gem_client/ios/Pods/Target Support Files/location/location-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.4.sdk/System/
    Library/Frameworks/UIKit.framework/Headers/UIAlertView.h:27:12: note: 'UIAlertView' has been explicitly marked deprecated
    here
    @interface UIAlertView : UIView
               ^
    /Users/icebit-imac3/flutter/.pub-cache/hosted/pub.dartlang.org/location-4.3.0/ios/Classes/LocationPlugin.m:176:48: warning:
    'UIAlertView' is deprecated: first deprecated in iOS 9.0 - UIAlertView is deprecated. Use UIAlertController with a
    preferredStyle of UIAlertControllerStyleAlert instead [-Wdeprecated-declarations]
                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Location is Disabled"
                                                   ^
    In module 'UIKit' imported from /Users/icebit-imac3/gem_client/ios/Pods/Target Support Files/location/location-prefix.pch:2:
    /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator15.4.sdk/System/
    Library/Frameworks/UIKit.framework/Headers/UIAlertView.h:27:12: note: 'UIAlertView' has been explicitly marked deprecated
    here
    @interface UIAlertView : UIView
               ^
    2 warnings generated.
    2 warnings generated.
    No file or variants found for asset: .env.
    Failed to package /Users/icebit-imac3/gem_client.
    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Planning
    note: Build preparation complete
    note: Building targets in dependency order
    /Users/icebit-imac3/gem_client/ios/Pods/Pods.xcodeproj: warning: The iOS Simulator deployment target
    'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 15.4.99. (in
    target 'ReachabilitySwift' from project 'Pods')

    Result bundle written to path:
        /var/folders/7x/7bvzz8356b79dpq_bq4cr_p40000gp/T/flutter_tools.YZ6rQ9/flutter_ios_build_temp_dirYwEDOD/temporary_xcresult_b
        undle


Could not build the application for the simulator.
Error launching application on iPhone 11.

Also tried,

• pod install
• iOS folder recreate using flutter create

but nothing works

Edit :

After setting IPHONEOS_DEPLOYMENT_TARGET to 9.0, gives below output,

Failed to build iOS app
Error output from Xcode build:
↳
    2022-03-19 12:53:28.631 xcodebuild[12230:115576] Requested but did not find extension point with identifier
    Xcode.IDEKit.ExtensionSentinelHostApplications for extension Xcode.DebuggerFoundation.AppExtensionHosts.watchOS of plug-in
    com.apple.dt.IDEWatchSupportCore
    2022-03-19 12:53:28.631 xcodebuild[12230:115576] Requested but did not find extension point with identifier
    Xcode.IDEKit.ExtensionPointIdentifierToBundleIdentifier for extension
    Xcode.DebuggerFoundation.AppExtensionToBundleIdentifierMap.watchOS of plug-in com.apple.dt.IDEWatchSupportCore
    ** BUILD FAILED **


Xcode's output:
↳
    Writing result bundle at path:
        /var/folders/7x/7bvzz8356b79dpq_bq4cr_p40000gp/T/flutter_tools.lDNtig/flutter_ios_build_temp_dirjdf2tt/temporary_xcresult_b
        undle

    No file or variants found for asset: .env.
    Failed to package /Users/icebit-imac3/gem_client.
    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Planning
    note: Build preparation complete
    note: Building targets in dependency order

    Result bundle written to path:
        /var/folders/7x/7bvzz8356b79dpq_bq4cr_p40000gp/T/flutter_tools.lDNtig/flutter_ios_build_temp_dirjdf2tt/temporary_xcresult_b
        undle


Could not build the application for the simulator.
Error launching application on iPhone 11.