Error Domain=NSOSStatusErrorDomain Code=-12847 "(null)"}, NSLocalizedFailureReason=不支持此媒体的格式

1563621644013.png","errMsg":"canvasToTempFilePath:ok"}---END:JSON--- at components/tki-qrcode/qrcode.js:1152 __LOG
2019-07-20 19:20:44.717470+0800 HBuilder[3233:271953] [Runtime][INFO:] appendPreloadJsFile[_www/app-view.js]
2019-07-20 19:20:44.751632+0800 HBuilder[3233:271953] [Runtime][INFO:] appendPreloadJsFile--result[1]---error [(null)]
2019-07-20 19:20:49.042802+0800 HBuilder[3233:271953] [Generic] Video /var/mobile/Containers/Data/Application/8AD52F47-1FC4-4E5B-BAF8-B18C018A2F12/Library/Pandora/apps/UNI1E9A940/doc/uniapp_temp_1563621630413/canvas/1563621644013.png cannot be saved to the photo library: Error Domain=AVFoundationErrorDomain Code=-11828 "打不开" UserInfo={NSUnderlyingError=0x2826fdbf0 {Error Domain=NSOSStatusErrorDomain Code=-12847 "(null)"}, NSLocalizedFailureReason=不支持此媒体的格式。, NSURL=file:///var/mobile/Containers/Data/Application/8AD52F47-1FC4-4E5B-BAF8-B18C018A2F12/Library/Pandora/apps/UNI1E9A940/doc/uniapp_temp_1563621630413/canvas/1563621644013.png, NSLocalizedDescription=打不开}