无法将inBuffer传输到roppedBuffer

Question

我正在尝试使用VNCoreMLRequest方法AVCapturePhotoCaptureDelegate（photo.pixelBuffer）的模型和cvPixelBuffer运行didFinishProcessingPhoto。然后，我将这个pixelBuffer传递给VNImageRequestHandler并在以下请求上执行它：

DispatchQueue.global(qos: .userInitiated).async {
    let handler = VNImageRequestHandler(cvPixelBuffer: pixelBuffer, orientation: .up, options: [:])

    do {
         try handler.perform([self.coreMLRequest()])
    } catch {
         return
    }
}

private func coreMLRequest() -> VNRequest {
    guard let model = model else {
        fatalError()
    }

    let request = VNCoreMLRequest(model: model) { (req, err) in
         if let error = err {
              print("error: \(error)")
         }

         if let observations = req.results as? [VNClassificationObservation] {
              print("observations: \(observations.count)")
         }
    }
    request.imageCropAndScaleOption = .centerCrop
    return request
}

VNCoreMLRequest内部的错误：

Error Domain=com.apple.vis Code=3 "Failed to transfer inBuffer to croppedBuffer. Error -12905"
UserInfo={NSLocalizedDescription=Failed to transfer inBuffer to croppedBuffer. Error -12905}