Flutter is not a framework of Apple's. You should better visit the supporting site or a community site to get better responses sooner. That would also help the author of the framework making it up to date for the new version of Xcode.

This is not a place to request sort of invitation code of a specific app. You should contact to the author directly.

You should better watch this thread: For xcode development, is the new macbook pro m1 pro 16gb good ? Or do I need 32 gb? In my opinion, 32 GB is enough for a while. But you should better have in mind that you cannot add more RAMs after you bought a new MacBook Pro. The answer from Graphics and Games Engineer would be helpful for you.

If you find the crash on the line liveLabel.type = .continuousReverse, the most likely reason would be that the @IBOutlet is not properly connected and the property liveLabel is nil at runtime. Have you checked all the possibility that liveLabel might not be connected properly?

First, you need a server receiving the post. Do you have one?

One possibility is that your code was wrong even in Xcode 12.0.1, but the Swift compiler could not detect the faults in your code. Pleas show enough code to see what is happening.

Thanks for showing more context. But you have not shown that you are using such many pods. As you may know, many pods are well-known as to cause problems at each time iOS or Xcode updates. I have tried with the exact code and URL you have shown, which causes no issues both on iOS 15 simulator or on an actual device of iOS 15.0.1. class ViewController: UIViewController { @IBOutlet weak var webView: WKWebView! let stringUrl = "https://developer.apple.com/" override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. if let url = URL(string: stringUrl) { webView.load(URLRequest(url: url)) } } } So, it is very likely that some still hidden parts of your code or any of your pods are causing the issue. Are you sure you are using WKWebView in a usual manner? For example, calling load(_:) while the webView is not visible may be considered to be an illegal usage by the recent iOS.

As far as I know, recent Xcode does not show an option to open a playground (Xcode Playground, not Swift Playgrounds) on start up. When you want to create a new playground, you may need to do it with menus:

I cannot reproduce the issue neither with Xcode 13 nor Xcode 13.1 RC. I do not know what Nimble is, but if you once installed it in any of the projects on your Mac, it might be affecting. Better try the same thing on a brand new Mac (on which you have never used Nimble thing). Even if that was not the cause of the issue, you may need to find the condition to reproduce it.

Awk is an open sourced language available on various platforms. Although awk may be included in most versions of macOS, it is provided as is, no support. You should better find a better place to learn awk. (And in fact, there are so many sites about awk.) By the way, I think = (a single equal sign) is an assignment operator in awk, not a comparison operator.

I added // for the #include <Cocoa/Cocoa.h> to start programming the interface of NSApplication Why did you do that??? to start programming the interface of NSApplication does not make sense. In modern C (as you can find C99, it is not too modern), you need to import/include the prototype definitions of all functions, before using them. You need to import the prototype definition of NSApplicationMain, if you want to use it. Which is included in <Cocoa/Cocoa.h>.

First of all, you need to make your project settings to target iOS 14. If your project is using iOS 15-only features, you may find some compile time errors and you need to fix them. After that, test your app carefully for both iOS 14 & 15, and when you are sure it's ready to publish, submit it as an updated version of your app.

Maybe you can utilize VNDetectBarcodesRequest. You can find many sample codes on the web.

Can you show your latest code?

A simplified example of using UTTypeData in Objective-C: #import "MyClass.h" @import UniformTypeIdentifiers; @implementation MyClass - (void)testWithDictionary:(NSDictionary *)itemDict { NSData *itemData = itemDict[UTTypeData.identifier]; } @end UTTypeData is a constant declared in the module UniformTypeIdentifiers. You should not declare another UTTypeData in your code.