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Sandbox extension creation failed: client lacks entitlements? for path:

I am trying to implement view screen capture. When I run my code, I got some error and the capturing failed.

Here is my code:

func saveSelfAsImage() {
    self.lockFocus()
    let image = NSImage(data: self.dataWithPDF(inside: self.bounds))
    self.unlockFocus()
    let imageData = image!.tiffRepresentation

    let fileManager = FileManager.default
    let path = "/Users/wudi/Documents/image.png"
    fileManager.createFile(atPath: path, contents: imageData, attributes: nil)

    let fileURL = URL(fileURLWithPath: path)
    NSWorkspace.shared.activateFileViewerSelecting([fileURL])
}

Here is the error log:

2018-11-29 06:44:10.645177+0800 Chapter3[2375:192235] [sandbox] Sandbox extension creation failed: client lacks entitlements? for path: [/Users/wudi/Documents/image.png] [/Users/wudi/Documents/image.png]
2018-11-29 06:44:10.645227+0800 Chapter3[2375:192235] [general] Sandbox extension data required immediately for flavor public.file-url, but failed to obtain.
2018-11-29 06:44:10.709833+0800 Chapter3[2375:192235] [sandbox] Sandbox extension creation failed: client lacks entitlements? for path: [/Users/wudi/Documents/image.png] [/Users/wudi/Documents/image.png]

The log says the client lacks entitlements. But how to get the entitlements? I google the error with key word in log, but did not find anything useful. Has anyone faced a similar problem?

Solution

  • The problem is solved. Thanks for help from EI Tomato and Willeke.

    Turning off the App Sandbox or increasing file access permissions can fix the problem.

    App Sandbox configuration