Thanks for re-ply!
I updated the plugin to 1.1.76 but it still has same warnings and a notice.
Notice: Array to string conversion in <path>/wp-content/plugins/wp-time-slots-booking-form/cp-main-class.inc.php on line 1372
Warning: Cannot modify header information – headers already sent by (output started at <path>/wp-content/plugins/wp-time-slots-booking-form/cp-main-class.inc.php:1372) in <path>/wp-content/plugins/wp-time-slots-booking-form/cp-main-class.inc.php on line 1358
P.S.
used under
PHP 7.4
mySQL 5.6.23
Anyway, this is a great plugin!
Thanks for your keeping upgrades!
