macOS AppleScript with Xcode error

Command /usr/bin/osacompile failed with exit code 1

--
--  WoW_WorkerAppDelegate.applescript
--  WoW Worker
--
--  Created by *** on 01/11/09.
--  Copyright 2009 __MyCompanyName__. All rights reserved.
--

script WoW_WorkerAppDelegate
	property parent : class "NSObject"
	
	on applicationWillFinishLaunching_(aNotification)
		tell application "TextEdit"
			activate
		end tell
	end applicationWillFinishLaunching_
	
	on clicked theObject
		tell application "System Events"
			keystroke "Hello :D"
		end tell
	end clicked
	
	on applicationShouldTerminate_(sender)
		-- Insert code here to do any housekeeping before your application quits 
		return current application's NSTerminateNow
	end applicationShouldTerminate_
	
end script