Error with 'setVisitorInfo' or 'sendOfflineMsg' - Cannot set property 'lastIndex' of undefined

[ecadagiani]

On my react zendesk webchat, I try to make a form to send the user name, email, and phone number.

For this I initialize the webchat, set the current visitor, then I send the data.

Here is my code:

const msg = {
    name: this.inputNameRef.current.value,
    email: this.inputMailRef.current.value,
    phone: this.inputPhoneRef.current.value,
    message: `Demande de démo depuis ${this.getDemoRequestPath()}`
}; // {name: "foo bar", email: "foo@bar.io", phone: "0611223344", message: "Demande de démo depuis /solutions/theapp"}

// Need to init the chat to be able to send offline message..
if (!this.props.data.isChatInit) {
    zChat.init({
        account_key: ACCOUNT_KEY
    });
    this.props.dispatch({
        type: 'initChat'
    });
}

zChat.setVisitorInfo({
    display_name: this.inputNameRef.current.value,
    email: this.inputMailRef.current.value,
    phone: this.inputPhoneRef.current.value
}, (err) => {
    if (err) log('Error setting visitor info');
});

zChat.sendOfflineMsg(msg, (err) => {
    if (err) log('Error sending demo request form');
});

When I try this, setVisitorInfo trigger this error:

web-sdk.js?452d:1453 Uncaught TypeError: Cannot set property 'lastIndex' of undefined
    at eval (eval at <anonymous> (widget.js:1465), <anonymous>:1453:21)
    at i.E.validate (eval at <anonymous> (widget.js:1465), <anonymous>:1533:13)
    at eval (eval at <anonymous> (widget.js:1465), <anonymous>:1411:25)
    at i.E.validate (eval at <anonymous> (widget.js:1465), <anonymous>:1533:13)
    at eval (eval at <anonymous> (widget.js:1465), <anonymous>:1433:22)
    at i.E.validate (eval at <anonymous> (widget.js:1465), <anonymous>:1533:13)
    at le (eval at <anonymous> (widget.js:1465), <anonymous>:5038:27)
    at h (eval at <anonymous> (widget.js:1465), <anonymous>:4559:12)
    at Object.eval [as setVisitorInfo] (eval at <anonymous> (widget.js:1465), <anonymous>:5220:33)
    at DemoRequestForm.send (eval at <anonymous> (widget.js:2221), <anonymous>:139:24)

If I comment setVisitorInfo, and just leave sendOfflineMsg the same error is trigger.

I check: my msg is correct, and the init is executed. And I do not receive anything from zChat.on()

This is a zChat bug or just me who is forgotten an info?