Deprecated: Return type of Nexmo\Call\Earmuff::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/trombino/public_html/sanctions.trombino.org/vendor_1/nexmo/client-core/src/Call/Earmuff.php on line 14