No file or variants found for asset: packages/timezone/data/2019c.tzf

[taringi]

The code doesn't run.

Here is an error.

Error detected in pubspec.yaml:
    No file or variants found for asset: packages/timezone/data/2019c.tzf.
    This asset was included from package syncfusion_flutter_calendar.
    Command PhaseScriptExecution failed with a nonzero exit code

Flutter 1.22.6 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 9b2d32b605 (5 days ago) • 2021-01-22 14:36:39 -0800
Engine • revision 2f0af37152
Tools • Dart 2.10.5

Thanks.