Fix Ci failure

.github/workflows/main.yml

@@ -37,6 +37,9 @@ jobs:
       
       - name: Install quill_html_converter dependencies
         run: flutter pub get -C quill_html_converter
+      
+      - name: Install quill_pdf_converter dependencies
+        run: flutter pub get -C quill_pdf_converter
 
       - name: Run flutter analysis
         run: flutter analyze

quill_pdf_converter/lib/quill_pdf_converter.dart

@@ -2,13 +2,19 @@ library quill_pdf_converter;
 
 import 'package:dart_quill_delta/dart_quill_delta.dart';
 import 'package:htmltopdfwidgets/htmltopdfwidgets.dart';
+import 'package:pdf/widgets.dart' as pw;
 import 'package:quill_html_converter/quill_html_converter.dart';
 
 /// Extension on [Delta] to add extra functions for converting to Pdf
 extension DeltaPdfExt on Delta {
   /// First convert to Html then to Pdf
-  Future<List<Widget>> toPdf() async {
+  Future<List<pw.Widget>> toPdf() async {
     final html = toHtml();
-    return HTMLToPdf().convert(html);
+    return HTMLToPdf().convert(
+      html,
+      fontFallback: [
+        pw.Font.symbol(),
+      ],
+    );
   }
 }