Warning: Undefined array key "district_id" in C:\xampp\htdocs\test1\get_data.php on line 3

Warning: pg_connect(): Unable to connect to PostgreSQL server: could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP connections on port 5433? could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "localhost" (::1) and accepting TCP/IP connections on port 5433? in C:\xampp\htdocs\test1\get_data.php on line 5
Connection Failno
Fatal error: Uncaught TypeError: pg_query(): Argument #1 ($connection) must be of type PgSql\Connection, bool given in C:\xampp\htdocs\test1\get_data.php:14 Stack trace: #0 C:\xampp\htdocs\test1\get_data.php(14): pg_query(false, 'SELECT ST_XMin(...') #1 {main} thrown in C:\xampp\htdocs\test1\get_data.php on line 14