AttendeesChat.js

...

class AttendeesChat extends Component {
    ...

    async componentDidMount() {
        const { match, user, streamToken } = this.props;

        await this.chatClient.setUser(user, streamToken);
        const channel = await this.chatClient.channel('messaging', match.params.conferenceAlias, {
            name: 'Video Call',
        });

        await this.setState({
            channel,
        });
    }

    ...
}

...