Configuration in Mapfish print 3 with leaflet

[BasmaNabil]

I am new to Mapfish print 3,i need help to know the configuration of the files to be able to print map in leaflet using mapfish print 3 (config.yaml,json.etc...),can anyone help me in that? This is my map:

      `var mymap = L.map('map').setView([8.7144, 125.7481],8);
	L.tileLayer( 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
		attribution: '&copy; <a href="https://www.openstreetmap.org/copyright"></a>',
		subdomains: ['a','b','c']
	}).addTo(mymap);
	L.control.scale({imperial:false}).addTo(mymap);
	
	var printProvider = L.print.provider({ 
			method: 'GET', 
			url: 'http://localhost:9090/print', 
			autoLoad: true, 
			outputFormat: 'pdf', 
			dpi: 90 
		}); 
	var printControl = L.control.print({ 
			provider: printProvider 
		}); 
	mymap.addControl(printControl);
          
	ProvincesLayer=L.geoJson(
			Provinces,
			{style : ProvincesStyle,
			 onEachFeature : ProvincesOnEachFeature
			}).addTo(mymap);
	mymap.fitBounds(ProvincesLayer.getBounds());`