Version 4.2.0 - Email comes without template

[domanskyi]

My env:
Django: 1.11.29
Python: 2.7.18
sendgrid-django: 4.2.0
I changed settings:

EMAIL_BACKEND = "sgbackend.SendGridBackend"
SENDGRID_API_KEY = 'api key'

And used a code sample from the example:

    mail = EmailMultiAlternatives(
        subject="Your Subject",
        body="This is a simple text email body.",
        from_email="company <noreply@company.co>",
        to=["myemail@gmail.com"],
    )
    mail.template_id = '6b02f312-ad80-4d7e-815a-24be029fd05b'

    mail.substitutions = {
        '%email%': 'some email',
        '%location_city%': 'some city',
    }

    mail.send()

Email is coming, but without template