Update index.html

index.html

@@ -1515,7 +1515,11 @@
 
                 try {
                     const pres = new PptxGenJS();
-                    pres.layout = 'A4'; // 8.27 x 11.69 inches
+                    
+                    // Fix for Error: UNKNOWN-LAYOUT
+                    // Explicitly define the layout size (A4 in inches)
+                    pres.defineLayout({ name: 'A4', width: 8.27, height: 11.69 });
+                    pres.layout = 'A4';
                     
                     const pageWidth = 8.27;
                     const pageHeight = 11.69;