Warning: Undefined array key "file" in /usr/home/zhenias/domains/cdn.friendschool.ct8.pl/public_html/index.html.php on line 2

Fatal error: Uncaught mysqli_sql_exception: Invalid character set was provided in /usr/home/zhenias/domains/cdn.friendschool.ct8.pl/public_html/connect/hosting.php:12
Stack trace:
#0 /usr/home/zhenias/domains/cdn.friendschool.ct8.pl/public_html/connect/hosting.php(12): mysqli_set_charset(Object(mysqli), 'utf8_polish_ci')
#1 /usr/home/zhenias/domains/cdn.friendschool.ct8.pl/public_html/index.html.php(3): require('/usr/home/zheni...')
#2 {main}
  thrown in /usr/home/zhenias/domains/cdn.friendschool.ct8.pl/public_html/connect/hosting.php on line 12