React Typescript: аргумент типа '{ [x: число]: любой; }' нельзя присвоить параметру типа

Я добавил метод onChange в свой проект (React, TS, Mobx), но получаю сообщение об ошибке: Argument of type '{ [x: number]: any; }' is not assignable to parameter of type

Я новичок в TypeScript и не знаю, почему это происходит. В чем может быть проблема?

(parameter) event: {
    target: {
        name: any;
        value: any;
    };
}

Argument of type '{ [x: number]: any; }' is not assignable to parameter of type 'IAddPlayerFormState | ((prevState: Readonly, props: Readonly) => IAddPlayerFormState | Pick | null) | Pick<...> | null'.

import React, { Component } from 'react';
import ViewStore from '../../../store/ViewStore';
import { TextField } from './../../../utils';

interface IAddPlayerFormProps {
  viewStore?: ViewStore; // Optional ViewStore
}

interface IAddPlayerFormState {
  playerName: string;
  isDisabled: boolean;
}

class AddPlayerForm extends Component<IAddPlayerFormProps, IAddPlayerFormState> {
  constructor(props: Readonly<IAddPlayerFormProps>) {
    super(props);

    this.state = {
      isDisabled: false,
      playerName: '',
    };
  }

  public onChange(event: { target: { name: any; value: any; }; }) {
    this.setState({ [event.target.name]: event.target.value });
    console.info('On Change!');
  }

  public handleSubmit = () => {
    console.info('On submit!');
  }

  public render() {
    const { isDisabled } = this.state;

    return (
      <form onSubmit = {this.handleSubmit}>
        <TextField
          type = "text"
          name = "name"
          value = {name}
          placeholder = "Add player"
          onChange = {this.onChange}
          disabled = {isDisabled}
        />

        <input type = "submit" />
      </form>
    );
  }
}

export default AddPlayerForm;