Fatal error: Uncaught mysqli_sql_exception: Too many connections in /var/www/html/includes/database.mysqli.inc:75
Stack trace:
#0 /var/www/html/includes/database.mysqli.inc(75): mysqli_real_connect(Object(mysqli), 'db', 'cntdr', 'Cn7dr@dm!n', 'cntdr', NULL, NULL, 2)
#1 /var/www/html/includes/database.inc(152): db_connect(Array)
#2 /var/www/html/includes/bootstrap.inc(1156): db_set_active()
#3 /var/www/html/includes/bootstrap.inc(1123): _drupal_bootstrap(2)
#4 /var/www/html/index.php(21): drupal_bootstrap(8)
#5 {main}
thrown in /var/www/html/includes/database.mysqli.inc on line 75