feat(template): add multi page upload capability

pkg/format/formatconverter.go

@@ -55,10 +55,8 @@ func convertPNG(input string, param ConversionParameters) (io.ReadCloser, error)
 	var args []string
 	var outExt string
 
-	fontsdir, err := svg.Storage.GetFontsDir()
-	if err != nil {
-		return nil, err
-	}
+	fontsdir := svg.Storage.GetFontsDir()
+
 	args = append(args, "--skip-system-fonts")
 	args = append(args, "--use-fonts-dir", fontsdir)