【图片转PDF】转换时SDK不支持时需插入空文档

PDF Office/PDF Master/Class/PDFTools/ImageToPDF/Manager/KMImageToPDFManager.swift

@@ -198,6 +198,7 @@ class KMImageToPDFManager: NSObject {
                         imageData.state = .success
                     } else {
                         imageData.state = .error
+                        document.insertPage(image!.size, at: UInt(conversionIndex))
                     }
                 }
                 conversionIndex += 1