Signature pad is not working in flutter web?

I am using the syncfusion_flutter_signaturepad: ^21.1.35 to get the signature from the user.It was working fine in the flutter mobile application but not in the flutter web.

Seems the toImage() is not supported in the web or am I doing something wrong.

Saving Image Code:

final GlobalKey<SfSignaturePadState> signaturePadKey = GlobalKey<SfSignaturePadState();
ui.Image data = await signaturePadKey.currentState!.toImage(pixelRatio: 3.0);
ByteData? bytes = await data.toByteData(format: ui.ImageByteFormat.png);
String imageEncoded = base64.encode(bytes!.buffer.asUint8List());

Error: Assertion failed: org-dartlang-sdk:///flutter_web_sdk/lib/_engine/engine/html/scene_builder.dart:94:16 dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 266:49 throw_ dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3 assertFailed lib/_engine/engine/html/scene_builder.dart 95:34 pushTransform packages/flutter/src/rendering/layer.dart 1414:12 toImage dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async packages/flutter/src/rendering/layer.dart 1404:27 toImage packages/syncfusion_flutter_signaturepad/signaturepad.dart 974:13 toImage dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async packages/syncfusion_flutter_signaturepad/signaturepad.dart 972:27 toImage packages/syncfusion_flutter_signaturepad/signaturepad.dart 372:31 toImage packages/tolk2go_tasker/SignaturePage/signature_view_model.dart 33:33 validatingSignature dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async packages/tolk2go_tasker/SignaturePage/signature_view_model.dart 28:35 validatingSignature packages/tolk2go_tasker/SignaturePage/signature.dart 156:54 <fn> packages/flutter/src/material/ink_well.dart 1072:21 handleTap packages/flutter/src/gestures/recognizer.dart 253:24 invokeCallback packages/flutter/src/gestures/tap.dart 627:11 handleTapUp packages/flutter/src/gestures/tap.dart 306:5 [_checkUp] packages/flutter/src/gestures/tap.dart 239:7 handlePrimaryPointer packages/flutter/src/gestures/recognizer.dart 615:9 handleEvent packages/flutter/src/gestures/pointer_router.dart 98:12 [_dispatch] packages/flutter/src/gestures/pointer_router.dart 143:9 <fn> dart-sdk/lib/_internal/js_dev_runtime/private/linked_hash_map.dart 21:13 forEach packages/flutter/src/gestures/pointer_router.dart 141:17 [_dispatchEventToRoutes] packages/flutter/src/gestures/pointer_router.dart 127:7 route packages/flutter/src/gestures/binding.dart 460:19 handleEvent packages/flutter/src/gestures/binding.dart 440:14 dispatchEvent packages/flutter/src/rendering/binding.dart 337:11 dispatchEvent packages/flutter/src/gestures/binding.dart 395:7 [_handlePointerEventImmediately] packages/flutter/src/gestures/binding.dart 357:5 handlePointerEvent packages/flutter/src/gestures/binding.dart 314:7 [_flushPointerEventQueue] packages/flutter/src/gestures/binding.dart 295:7 [_handlePointerDataPacket] lib/_engine/engine/platform_dispatcher.dart 1183:13 invoke1 lib/_engine/engine/platform_dispatcher.dart 244:5 invokeOnPointerDataPacket lib/_engine/engine/pointer_binding.dart 147:39 [_onPointerData] lib/_engine/engine/pointer_binding.dart 653:20 <fn> lib/_engine/engine/pointer_binding.dart 594:14 <fn> lib/_engine/engine/pointer_binding.dart 288:16 loggedHandler lib/_engine/engine/pointer_binding.dart 179:80 <fn> dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 334:14 _checkAndCall dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 339:39 dcall

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