WordPress 5.5.1 running Enfold theme version 4.7.6.3
To resolve temporary the issue :
Edit : wp-content/themes/enfold/includes/helper-privacy.php on Line 303
Before : setcookie( 'aviaPrivacyMustOptInSetting', false, $args );
After : //setcookie( 'aviaPrivacyMustOptInSetting', false, $args );
Best,
Elie