ios – Swift: Picture is not going to be saved in picture library, all the time getting error message

I would like so save a big picture (giant width) to photographs app.

I merge completely different pictures along with this technique:

func mergeImages(pictures: [[UIImage]]) -> UIImage? {
    guard let firstRowImages = pictures.first else {
        return nil // If the array is empty, there may be nothing to merge
    }
    
    let sizeHeight = ((pictures.first?.first?.measurement.top ?? 0) * CGFloat(pictures.depend))
    
    let imageSize = firstRowImages.cut back(CGSize.zero) { (consequence, picture) -> CGSize in
        return CGSize(width: consequence.width + picture.measurement.width, top: max(consequence.top, picture.measurement.top))
    }
    
    UIGraphicsBeginImageContextWithOptions(CGSize(width: imageSize.width, top: (imageSize.top * CGFloat(pictures.depend))), true, 0.0)
    
    var currentYOffset: CGFloat = 0.0
    
    for rowImages in pictures {
        var currentXOffset: CGFloat = 0.0
        
        for picture in rowImages {
           let imageRect = CGRect(x: currentXOffset, y: currentYOffset, width: picture.measurement.width, top: picture.measurement.top)
            picture.draw(in: imageRect)
            currentXOffset += picture.measurement.width
        }
        
        currentYOffset += imageSize.top
    }
    
    let mergedImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    
    print(mergedImage?.measurement)
    
    return mergedImage
}

Then I wish to save this new merged picture to photographs app:

if let mergedImage = self.mergeImages(pictures: [self.rowSnapImages]) {
                        UIImageWriteToSavedPhotosAlbum(mergedImage, self, #selector(self.imageSaved(_:didFinishSavingWithError:contextInfo:)), nil)
                    } 

Completion technique:

@objc func imageSaved(_ picture: UIImage, didFinishSavingWithError error: NSError?, contextInfo: UnsafeMutableRawPointer?) {
    
    if let error = error {
        print("(error)")
        if let underlyingError = error.userInfo[NSUnderlyingErrorKey] as? NSError {
            print("(underlyingError.localizedDescription)")
        }
    }
}

The scale of the merged picture ist:

Picture Dimension: (73098.0, 715.0)

I all the time get this error:

Error Area=ALAssetsLibraryErrorDomain Code=-1 "Unknown error" UserInfo={NSLocalizedDescription=Unknown error, NSUnderlyingError=0x600000e2ba20 {Error Area=PHPhotosErrorDomain Code=3303 "(null)"}}

and

The operation couldn’t be accomplished. (PHPhotosErrorDomain error 3303.)

I looked for any answer however nothing helped me right here. I additionally tried to avoid wasting the picture to recordsdata app, but in addition getting an error when changing the merged picture to jpeg or png.