[Mobile] Null check operator used on a null value in Line.delete(line.dart:189)

[EgorK0rshun]

My issue is about [Mobile]

 Null check operator used on a null value
       at flutter_quill.src.models.documents.nodes.line.dart.Line.delete(line.dart:189)
       at flutter_quill.src.models.documents.nodes.container.dart.Container.delete(container.dart:149)
       at flutter_quill.src.models.documents.nodes.container.dart.Container.delete(container.dart:149)
       at flutter_quill.src.models.documents.document.dart.Document.compose(document.dart:295)
       at flutter_quill.src.models.documents.document.dart.Document.delete(document.dart:97)
       at flutter_quill.src.models.documents.document.dart.Document.replace(document.dart:125)
       at flutter_quill.src.widgets.controller.dart.QuillController.replaceText(controller.dart:240)
       at flutter_quill.src.widgets.raw_editor.raw_editor_state_selection_delegate_mixin.dart.RawEditorStateSelectionDelegateMixin.textEditingValue=(raw_editor_state_selection_delegate_mixin.dart:37)
       at flutter_quill.src.widgets.raw_editor.raw_editor_state_selection_delegate_mixin.dart.RawEditorStateSelectionDelegateMixin.userUpdateTextEditingValue(raw_editor_state_selection_delegate_mixin.dart:163)
       at flutter_quill.src.widgets.raw_editor.dart.RawEditorState._replaceText(raw_editor.dart:1426)
       at flutter.src.widgets.actions.dart.CallbackAction.invoke(actions.dart:603)
       at flutter.src.widgets.actions.dart.Action._invoke(actions.dart:338)
       at flutter.src.widgets.actions.dart.ActionDispatcher.invokeAction(actions.dart:647)
       at flutter.src.widgets.actions.dart.Actions.invoke.<fn>(actions.dart:973)
       at flutter.src.widgets.actions.dart.Actions._visitActionsAncestors(actions.dart:753)
       at flutter.src.widgets.actions.dart.Actions.invoke(actions.dart:967)
       at flutter_quill.src.widgets.raw_editor.dart._DeleteTextAction.invoke(raw_editor.dart:2174)
       at flutter.src.widgets.actions.dart._OverridableContextAction.invokeDefaultAction(actions.dart:1825)
       at flutter.src.widgets.actions.dart._OverridableActionMixin.invoke(actions.dart:1690)
       at flutter.src.widgets.actions.dart.Action._invoke(actions.dart:336)
       at flutter.src.widgets.actions.dart.ActionDispatcher.invokeActionIfEnabled(actions.dart:672)
       at flutter.src.widgets.shortcuts.dart.ShortcutManager.handleKeypress(shortcuts.dart:847)
       at flutter.src.widgets.shortcuts.dart._ShortcutsState._handleOnKey(shortcuts.dart:1038)
       at flutter.src.widgets.focus_manager.dart._HighlightModeManager.handleKeyMessage(focus_manager.dart:1809)
       at flutter.src.services.hardware_keyboard.dart.KeyEventManager._dispatchKeyMessage(hardware_keyboard.dart:964)
       at flutter.src.services.hardware_keyboard.dart.KeyEventManager.handleRawKeyMessage(hardware_keyboard.dart:1029)
       at flutter.src.services.platform_channel.dart.BasicMessageChannel.setMessageHandler.<fn>(platform_channel.dart:212)
       at flutter.src.services.binding.dart._DefaultBinaryMessenger.setMessageHandler.<fn>(binding.dart:567)
       at ui.hooks.dart._invoke2.<fn>(hooks.dart:205)
       at async.zone.dart._rootRun(zone.dart:1399)
       at async.zone.dart._CustomZone.run(zone.dart:1301)
       at async.zone.dart._CustomZone.runGuarded(zone.dart:1209)
       at ui.hooks.dart._invoke2(hooks.dart:204)
       at ui.channel_buffers.dart._ChannelCallbackRecord.invoke(channel_buffers.dart:45)
       at ui.channel_buffers.dart._Channel.push(channel_buffers.dart:135)
       at ui.channel_buffers.dart.ChannelBuffers.push(channel_buffers.dart:331)
       at ui.platform_dispatcher.dart.PlatformDispatcher._dispatchPlatformMessage(platform_dispatcher.dart:736)
       at ui.hooks.dart._dispatchPlatformMessage(hooks.dart:114)