everything worked fine with php7.4, now we have to go php8. Booster Plus for WooCommerce gives the following error with php8:
[21-Jan-2023 12:51:54 UTC] PHP Warning: A non-numeric value encountered in /wp-content/plugins/booster-plus-for-woocommerce/includes/class-wcj-payment-gateways-fees.php on line 271
[21-Jan-2023 12:52:12 UTC] PHP Warning: Trying to access array offset on value of type null in /wp-content/plugins/booster-plus-for-woocommerce/includes/class-wcj-payment-gateways-fees.php on line 245
[21-Jan-2023 12:52:12 UTC] PHP Fatal error: Uncaught TypeError: Unsupported operand types: string / int in /wp-content/plugins/booster-plus-for-woocommerce/includes/class-wcj-payment-gateways-fees.php:271
(with enabled or disabled other payment plagings). WP 6.1.1, BPWC 6.0.1, WooCommerce 7.3.0