Deprecated: Return type of SendGrid\ReplyTo::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 77 Deprecated: Return type of SendGrid\ClickTracking::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 116 Deprecated: Return type of SendGrid\OpenTracking::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 155 Deprecated: Return type of SendGrid\SubscriptionTracking::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 216 Deprecated: Return type of SendGrid\Ganalytics::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 301 Deprecated: Return type of SendGrid\TrackingSettings::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 366 Deprecated: Return type of SendGrid\BccSettings::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 407 Deprecated: Return type of SendGrid\BypassListManagement::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 435 Deprecated: Return type of SendGrid\Footer::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 484 Deprecated: Return type of SendGrid\SandBoxMode::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 512 Deprecated: Return type of SendGrid\SpamCheck::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 561 Deprecated: Return type of SendGrid\MailSettings::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 634 Deprecated: Return type of SendGrid\ASM::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 676 Deprecated: Return type of SendGrid\Attachment::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 748 Deprecated: Return type of SendGrid\Content::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 808 Deprecated: Return type of SendGrid\Personalization::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 913 Deprecated: Return type of SendGrid\Email::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 992 Deprecated: Return type of SendGrid\Mail::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/mail/Mail.php on line 1213 Deprecated: Return type of SendGrid\Recipient::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/sendgrid/sendgrid/lib/helpers/contacts/Recipients.php on line 73 Deprecated: Return type of Tightenco\Collect\Support\Collection::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Collection.php on line 1277 Deprecated: Return type of Tightenco\Collect\Support\Collection::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Collection.php on line 1288 Deprecated: Return type of Tightenco\Collect\Support\Collection::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Collection.php on line 1300 Deprecated: Return type of Tightenco\Collect\Support\Collection::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Collection.php on line 1315 Deprecated: Return type of Tightenco\Collect\Support\Collection::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Collection.php on line 1243 Deprecated: Return type of Tightenco\Collect\Support\Collection::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Collection.php on line 1233 Deprecated: Return type of Tightenco\Collect\Support\Collection::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Traits/EnumeratesValues.php on line 705 Deprecated: Return type of Tightenco\Collect\Support\LazyCollection::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/LazyCollection.php on line 1206 Deprecated: Return type of Tightenco\Collect\Support\LazyCollection::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/LazyCollection.php on line 1196 Deprecated: Return type of Tightenco\Collect\Support\LazyCollection::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/vendor/tightenco/collect/src/Collect/Support/Traits/EnumeratesValues.php on line 705 Deprecated: AppKernel implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /home/httpd/vhosts/castella-sports.ch/mautic.castella-sports.ch/app/AppKernel.php on line 24 Mautic does not support PHP version 8.2.33 at this time. To use Mautic, you will need to downgrade to an earlier version.