thrown Null check operator used on a null value. Error thrown Instance of 'ErrorDescription'

[sumitstranger]

Getting this error on Firebase Crashlytics for the following version

Flutter: 2.8.1

pin_code_fields: ^7.4.0

Code:

import 'package:flutter/material.dart';
import 'package:pin_code_fields/pin_code_fields.dart';

import '../../app_imports.dart';

class InputPasscodeWidget extends StatelessWidget {
  final Function(String)? onCompleted;
  final Function(String) onChanged;
  final TextEditingController controller;
  final FocusNode? focusNode;
  InputPasscodeWidget({
    Key? key,
    required this.onCompleted,
    required this.onChanged,
    required this.controller,
    this.focusNode,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return InkWell(
      splashFactory: NoSplash.splashFactory,
      highlightColor: Colors.transparent,
      focusColor: Colors.transparent,
      child: Container(
        width: 192,
        height: 60,
        padding: EdgeInsets.fromLTRB(20, 20, 20, 10),
        child: PinCodeTextField(
          appContext: context,
          length: 4,
          obscureText: true,
          autoDisposeControllers: false,
          animationType: AnimationType.fade,
          autoFocus: true,
          autoDismissKeyboard: true, // Set this to true otherwise last digit will be not visible
          enableActiveFill: true,
          showCursor: false,
          pinTheme: PinTheme(
            shape: PinCodeFieldShape.circle,
            fieldWidth: 20,
            fieldHeight: 20,
            activeColor: COLOR_PRIMARY,
            activeFillColor: COLOR_PRIMARY,
            selectedColor: PINCODE_INACTIVE,
            selectedFillColor: PINCODE_INACTIVE,
            inactiveColor: PINCODE_INACTIVE,
            inactiveFillColor: PINCODE_INACTIVE,
            borderWidth: 0
          ),
          animationDuration: Duration(milliseconds: 300),
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          textStyle: TextStyle(color: Colors.transparent),
          pastedTextStyle: TextStyle(color: Colors.transparent),
          controller: controller,
          focusNode: focusNode,
          keyboardType: TextInputType.number,
          onCompleted: onCompleted,
          onChanged: onChanged,
        ),
      ),
      onTap: () => focusNode?.requestFocus(),
    );
  }
}

Firebase Crashlytics: Stack-Tree:

Keys:

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[meet7-sagar23]

Still Occurring.