Render SwiftUI view to pdf ( debug Errors)

Hi everyone, I use this method for render a SwiftUI view to a PDF, My method is work and my app not crashing but I got errors on the debug area. The errors appearing exactly when I tap ShareLink button.

my code:

struct ContentView: View {
    
    var body: some View { ...
        // Rest of the codes
        
            }
        }
        .navigationTitle("")
        .navigationBarTitleDisplayMode(.inline)
        .toolbar {
            ToolbarItemGroup {
                ShareLink("Export PDF", item: render())
            }
        }
    }
    
    func render() -> URL {
        // 1: Render Hello World with some modifiers
        let renderer = ImageRenderer(content: PdfView)
        
        
        // 2: Save it to our documents directory
        let url = URL.documentsDirectory.appending(path: "test.pdf")
        
        // 3: Start the rendering process
        renderer.render { size, context in
            // 4: Tell SwiftUI our PDF should be the same size as the views we're rendering
            var box = CGRect(x: 0, y: 0, width: size.width, height: size.height)
            
            // 5: Create the CGContext for our PDF pages
            guard let pdf = CGContext(url as CFURL, mediaBox: &box, nil) else {
                return
            }
            
            // 6: Start a new PDF page
            pdf.beginPDFPage(nil)
            
            // 7: Render the SwiftUI view data onto the page
            context(pdf)
            
            // 8: End the page and close the file
            pdf.endPDFPage()
            pdf.closePDF()
        }
        
        return url
    }
    
var PdfView: some View { ...
        // Rest of the code
            }
        }
    }
}

Errors :

How I can solve that?

Thanks in advance