When I start the shop site with grand-prix-tickets.com/shop there occurs always a critical error.
This same error also display on other several sites in the shop
When I debug the error, I get the following message:
Deprecated: Return type of SweetAlert2::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/26/d13363536/htdocs/clickandbuilds/TMTest/wp-content/plugins/wc-product-subtitle/vendor/varunsridharan/sweetalert2-php/sweetalert2.php on line 158
Please help me to solve this issue with your plugin.
When I start the shop site with grand-prix-tickets.com/shop there occurs always a critical error.
This same error also display on other several sites in the shop
When I debug the error, I get the following message:
Deprecated: Return type of SweetAlert2::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /homepages/26/d13363536/htdocs/clickandbuilds/TMTest/wp-content/plugins/wc-product-subtitle/vendor/varunsridharan/sweetalert2-php/sweetalert2.php on line 158
Please help me to solve this issue with your plugin.
Thanks, Jochen