Warning: pg_connect(): Unable to connect to PostgreSQL server: could not connect to server: 연결이 거부됨 Is the server running on host "115.68.163.129" and accepting TCP/IP connections on port 5435? in /opt/lampp/htdocs/gntsolution_2023/Gnt_main_bak/include/php/db_conn.php on line 4

Fatal error: Uncaught Error: Call to undefined function DB_ACCESS_ERR() in /opt/lampp/htdocs/gntsolution_2023/Gnt_main_bak/include/php/db_conn.php:7 Stack trace: #0 /opt/lampp/htdocs/gntsolution_2023/Gnt_main_bak/main.php(2): include() #1 {main} thrown in /opt/lampp/htdocs/gntsolution_2023/Gnt_main_bak/include/php/db_conn.php on line 7