improve cbz export

lib/pages/local_comics_page.dart

@@ -404,8 +404,9 @@ class _LocalComicsPageState extends State<LocalComicsPage> {
               var file = await CBZ.export(c);
               await saveFile(filename: file.name, file: file);
               await file.delete();
-            } catch (e) {
+            } catch (e, s) {
               context.showMessage(message: e.toString());
+              Log.error("CBZ Export", e, s);
             }
             controller.close();
           }),

lib/utils/cbz.dart

@@ -208,6 +208,7 @@ abstract class CBZ {
       ),
     );
     var cbz = File(FilePath.join(App.cachePath, sanitizeFileName('${comic.title}.cbz')));
+    if (cbz.existsSync()) cbz.deleteSync();
     await _compress(cache.path, cbz.path);
     cache.deleteSync(recursive: true);
     return cbz;

pubspec.yaml

@@ -21,7 +21,7 @@ dependencies:
   flutter_qjs:
     git:
       url: https://github.com/wgh136/flutter_qjs
-      ref: 1657f62fe7545ac43a339e0a5ee2b82bacd81e9f
+      ref: 9c99ac258a11f8e91761a5466a190efba3ca64af
   crypto: ^3.0.6
   dio: ^5.7.0
   html: ^0.15.5
@@ -51,7 +51,7 @@ dependencies:
   sliver_tools: ^0.2.12
   flutter_file_dialog: ^3.0.2
   file_selector: ^1.0.3
-  zip_flutter: ^0.0.5
+  zip_flutter: ^0.0.6
   lodepng_flutter:
     git:
       url: https://github.com/venera-app/lodepng_flutter