Deprecated: SLN_Helper_AvailabilityItems::isValidDatetimeDuration(): Implicitly marking parameter $service as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html1/wp-content/plugins/salon-booking-system/src/SLN/Helper/AvailabilityItems.php on line 180

Deprecated: SLN_Helper_AvailabilityItems::isValidDatetime(): Implicitly marking parameter $service as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html1/wp-content/plugins/salon-booking-system/src/SLN/Helper/AvailabilityItems.php on line 192

Deprecated: SLN_Helper_AvailabilityItems::isValidDate(): Implicitly marking parameter $service as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html1/wp-content/plugins/salon-booking-system/src/SLN/Helper/AvailabilityItems.php on line 204

Deprecated: SLN_Helper_AvailabilityItems::isValidTime(): Implicitly marking parameter $service as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html1/wp-content/plugins/salon-booking-system/src/SLN/Helper/AvailabilityItems.php on line 215

Deprecated: SLN_Helper_AvailabilityItems::isValidTimeDuration(): Implicitly marking parameter $service as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html1/wp-content/plugins/salon-booking-system/src/SLN/Helper/AvailabilityItems.php on line 239

Deprecated: SLN_Helper_AvailabilityItems::isValidTimeInterval(): Implicitly marking parameter $service as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html1/wp-content/plugins/salon-booking-system/src/SLN/Helper/AvailabilityItems.php on line 244