Stripe Webhook Endpoint Error: No signatures found matching the expected signature

Question

I'm seeing the following error on my WebHook handler:

Webhook Error: No signatures found matching the expected signature for payload. Are you passing the raw request body you received from Stripe? https://github.com/stripe/stripe-node#webhook-signing

Following this example, I updated my code from req.body to req.rawBody.

Stripe Error: No signatures found matching the expected signature for payload

Here is my code:

app.post('/webhook', raw({ type: 'application/json' }), async (req, res) => {
    const sig = req.headers['stripe-signature'];
    let event;

    try {
        event = stripe.webhooks.constructEvent(
            req.rawBody,
            sig,
            stripeWebhookSigningKey
        );
    } catch (err) {
        console.log(err);
    }

    if (event.type === 'checkout.session.completed') {
        ...
    } else if (event.type === 'account.updated') {
        ...
    } else {
        ...
    }
})