Error: Could not create datasource for type: 'postgis' (no datasource plugin directories have been successfully registered)

[Rehan-05]

I'm trying to rendering the data by using the mapnik in node js. But continuously facing errors.

`
/set framework and dependencies
var express = require('express');
var app = express();
var url = require('url');

//mapnik and dependecies
var mapnik = require('mapnik');
var fs = require('fs');

var mapProjection = '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs';
var map = new mapnik.Map(512, 512, mapProjection);

//mapnik
//mapnik.register_default_fonts();
//mapnik.register_default_input_plugins();

//mapnik pool
var mapnikPool = require('mapnik-pool')(mapnik);
var pool = mapnikPool.fromString(fs.readFileSync('./style.xml', 'utf8'), {
'size': 512,
'height': 512,
'width': 512,
}, {});

//postgis
var settings = require('./settings.js');
var postgis = new mapnik.Datasource(settings.postgis);

app.get('/render', function (req, res) {
console.log('request' + "\n");

pool.acquire(function (err, map) {
    //console.log(map);

    var query = req.url.split('&');
    //console.log(query);

    var bbox = query[13].replace('BBOX=', '').split('%2C').map(function (item) {
        return parseFloat(item);
    });
    //get layer
    var layerName = query[5].replace('LAYERS=', '').split('%3A')[1];

    //set style, datasource
    var layer = new mapnik.Layer(layerName, mapProjection);
    layer.datasource = postgis;
    layer.styles = ['style_pg'];

    map.add_layer(layer);
    map.extent = bbox;
    //map.zoomAll(bbox);

    //console.log(map);

    var im = new mapnik.Image(512, 512);
    map.render(im, function (err, im) {
        if (err) throw err;
        im.encode('png', function (err, buffer) {
            if (err) throw err;
            fs.writeFile('./tiles/map' + Math.round(Math.random() * 10000) + '.png', buffer, function (err) {
                if (err) throw err;


                //send file must be here because async functions
                res.setHeader('Content-Length', buffer.length);
                res.setHeader('Content-Type', 'image/png');
                /*res.sendFile('map' + Math.round(Math.random() * 10000) + '.png', {
                    'root': '/var/www/fmp/etc/nodejs/'
                });*/
                res.send(buffer);
                //console.log('saved map image to map.png');
            });
        });
    });
    //});
});

});

app.listen(3003, () => {
console.log('Server is running on port 3003');
});
`

Here is my settings.js

var path = require('path');

module.exports.styles = path.join(__dirname, 'styles');

module.exports.postgis = {
'dbname' : 'osm',
'table': 'morocco_roads',
'geometry_field' : 'geom',
'srid' : 3857,
'user' : 'osmrehan05',
'password': 'Pakistan12@',
'max_size' : 10,
'type' : 'postgis',
'port': '5432',
'host': 'localhost',
'extent' : '-20005048.4188,-9039211.13765,19907487.2779,17096598.5401' //set for epsg: 3857
};

Here is my package.json
{
"name": "my_mapnik_project",
"version": "1.0.0",
"description": "",
"main": "rendernew2.js",
"scripts": {
"test": "echo "Error: no test specified" && exit 1",
"start": "nodemon rendernew2.js",
"dev": "nodemon rendernew2.js"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.18.2",
"fs": "^0.0.1-security",
"mapnik": "^4.5.9",
"mapnik-pool": "^0.1.3",
"pg": "^8.11.3",
"url": "^0.11.3"
},
"devDependencies": {
"nodemon": "^3.0.1"
}
}

"Here is my style.xml

<Style name="blue_style"> </Style> blue_style csv wkt,Name POLYGON((-180 -90,-180 90,180 90,180 -90,-180 -90)),Blue Rectangle

[Rehan-05]

@artemp Can you please check it.

If i un-commit both these plugins
//mapnik.register_default_fonts();
//mapnik.register_default_input_plugins();

then facing error

/root/my_mapnik_project/rendernew2.js:27
var postgis = new mapnik.Datasource(settings.postgis);
^

Error: Postgis Plugin: authentication method 10 not supported
Connection string: 'host=localhost port=5432 dbname=osm user=osmrehan05 connect_timeout=4 fallback_application_name=mapnik'

[Rehan-05]

Need urgent response. Thanks
@noirbizarre @mathisloge