data base connect failed.
<br />
<b>Fatal error</b>:  Uncaught TypeError: pg_query(): Argument #1 ($connection) must be of type PgSql\Connection, bool given in /var/www/html/past.php:86
Stack trace:
#0 /var/www/html/past.php(86): pg_query(false, 'select sel,nen,...')
#1 {main}
  thrown in <b>/var/www/html/past.php</b> on line <b>86</b><br />