Fatal error: Uncaught TypeError: mysqli_select_db(): Argument #1 ($mysql) must be of type mysqli, false given in /home/nuritsubushi/www/rs/common.php:208 Stack trace: #0 /home/nuritsubushi/www/rs/common.php(208): mysqli_select_db() #1 /home/nuritsubushi/www/rs/siryou.php(5): connectDb() #2 {main} thrown in /home/nuritsubushi/www/rs/common.php on line 208