Error about: ACCOUNT_EMAIL_REQUIRED is deprecated

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Subject: Cron mailman@mailman MAILMAN_WEB_CONFIG=/var/lib/mailman3/web/project/settings.py /opt/mailman3/bin/mailman-web runjobs minutely

System check identified some issues:

WARNINGS: ?: settings.ACCOUNT_EMAIL_REQUIRED is deprecated, use: settings.ACCOUNT_SIGNUP_FIELDS = ['email*', 'username*', 'password1*', 'password2*']