Fatal error: Uncaught Error: Using $this when not in object context in /home/vuser/3/4/0017243002/www.takamatsu-is.com/reservation/index.php:205 Stack trace: #0 /home/vuser/3/4/0017243002/www.takamatsu-is.com/reservation/index.php(78): holidaycheck('4', '2021', '11') #1 {main} thrown in /home/vuser/3/4/0017243002/www.takamatsu-is.com/reservation/index.php on line 205