fix(card): Use correct template endpoints

services/templater.go

@@ -84,7 +84,8 @@ func (t *DefaultTemplater) GenerateBarcode(code int, format string, prefix strin
 
 func (t *DefaultTemplater) StringToTemplate(templateString string) (*template.Template, error) {
 	return template.New("template").Funcs(template.FuncMap{
-		"barcode": t.GenerateBarcode,
+		"barcode":     t.GenerateBarcode,
+		"sponsorLogo": func(id int) string { return "a" },
 	}).Parse(templateString)
 }