Fatal error: Uncaught ArgumentCountError: mysqli_query() expects at least 2 arguments, 1 given in /usr/home/r53mwD9o/domains/biuromeritum.com.pl/public_html/3.php:4 Stack trace: #0 /usr/home/r53mwD9o/domains/biuromeritum.com.pl/public_html/3.php(4): mysqli_query('SELECT * FROM k...') #1 /usr/home/r53mwD9o/domains/biuromeritum.com.pl/public_html/content.php(15): include('/usr/home/r53mw...') #2 /usr/home/r53mwD9o/domains/biuromeritum.com.pl/public_html/index.php(95): include('/usr/home/r53mw...') #3 {main} thrown in /usr/home/r53mwD9o/domains/biuromeritum.com.pl/public_html/3.php on line 4