Fatal error for DB errors

[Yogurt4]

Fatal error: Uncaught TypeError: pg_fetch_assoc(): Argument #1 ($result) must be of type PgSql\Result, bool given in /var/www/html/wp-content/pg4wp/driver_pgsql.php:555 Stack trace: #0 /var/www/html/wp-content/pg4wp/driver_pgsql.php(555): pg_fetch_assoc(false) #1 /var/www/html/wp-content/pg4wp/core.php(34) : eval()'d code(2351): wpsqli_query(Object(PgSql\Connection), 'INSERT INTO `wp...') #2 /var/www/html/wp-content/pg4wp/core.php(34) : eval()'d code(2265): wpdb2->_do_query('INSERT INTO `wp...') #3 /var/www/html/wp-content/pg4wp/core.php(34) : eval()'d code(2614): wpdb2->query('INSERT INTO `wp...') #4 /var/www/html/wp-content/pg4wp/core.php(34) : eval()'d code(2503): wpdb2->_insert_replace_helper('wp_posts', Array, NULL, 'INSERT') #5 /var/www/html/wp-includes/post.php(4851): wpdb2->insert('wp_posts', Array) #6 /var/www/html/wp-includes/nav-menu.php(549): wp_insert_post(Array, true, true) #7 /var/www/html/wp-content/plugins/wordpress-importer/class-wp-import.php(1094): wp_update_nav_menu_item(51, 0, Array) #8 /var/www/html/wp-content/plugins/wordpress-importer/class-wp-import.php(1393): WP_Import->process_menu_item(Array) #9 /var/www/html/wp-content/plugins/wordpress-importer/class-wp-import.php(140): WP_Import->backfill_parents() #10 /var/www/html/wp-content/plugins/wordpress-importer/class-wp-import.php(78): WP_Import->import('/var/www/html/w...', Array) #11 /var/www/html/wp-admin/admin.php(365): WP_Import->dispatch() #12 {main} thrown in /var/www/html/wp-content/pg4wp/driver_pgsql.php on line 555

It happens because $result is not checked at the end of wpsqli_query and is passed on to pg_fetch_assoc.

From line 548, I suggest this block instead:

    if ($result !== false && false !== strpos($sql, "INSERT INTO") && false !== strpos($sql, "RETURNING")) {
        $matches = array();
        preg_match("/^INSERT INTO\s+`?([a-z0-9_]+)`?/i", $query, $matches);
        $tableName = $matches[1];
        $primaryKey = get_primary_key_for_table($connection, $tableName);
        $row = pg_fetch_assoc($result);

        $GLOBALS['pg4wp_ins_id'] = $row[$primaryKey];
    }