Warning: file_get_contents(): php_network_getaddresses: getaddrinfo for portalidea.org.br failed: Temporary failure in name resolution in /var/www/html/wp-content/themes/idea-tema/functions/functions-db.php on line 4

Warning: file_get_contents(https://portalidea.org.br/wp-content/themes/idea-tema/js/municipios_texto.json): Failed to open stream: php_network_getaddresses: getaddrinfo for portalidea.org.br failed: Temporary failure in name resolution in /var/www/html/wp-content/themes/idea-tema/functions/functions-db.php on line 4

Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /var/www/html/wp-content/themes/idea-tema/functions/functions-db.php:5
Stack trace:
#0 /var/www/html/wp-content/themes/idea-tema/functions/functions-db.php(5): array_column(NULL, 'CO_MUNICIPIO')
#1 /var/www/html/wp-content/themes/idea-tema/functions.php(13): include('/var/www/html/w...')
#2 /var/www/html/wp-settings.php(663): include('/var/www/html/w...')
#3 /var/www/html/wp-config.php(106): require_once('/var/www/html/w...')
#4 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...')
#5 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...')
#6 /var/www/html/index.php(17): require('/var/www/html/w...')
#7 {main}
  thrown in /var/www/html/wp-content/themes/idea-tema/functions/functions-db.php on line 5