Jiffy Package Compilation Error After Updating FlutterFlow

After updating FlutterFlow, I'm getting a compilation error when trying to run the app in Run Mode. Here’s the error message:

The HTML Renderer is deprecated. Do not use "--web-renderer=html".
See: https://docs.flutter.dev/to/web-html-renderer-deprecation
Target dart2js failed: ProcessException: Process exited abnormally with exit code 1:
/opt/.pub-cache/hosted/pub.dev/jiffy-6.4.0/lib/src/utils/verify_locale.dart:8:40:
Error: A value of type 'List<dynamic>' can't be returned from a function with return type 'List<String>'.
 - 'List' is from 'dart:core'.
    date_intl.dateTimeSymbolMap().keys.toList();
                                       ^
Error: Compilation failed.