docs: def load_template_source(self, template_name, template_dirs=None):
          """Template loader that loads templates from zipped modules."""
          #Get every app's folder
          log.error("Calling zip loader")
          for folder in app_template_dirs:
              if ".zip/" in folder.replace("\\", "/"):
                  lib_file, relative_folder = get_zip_file_and_relative_path(folder)
                  log.error(lib_file, relative_folder)
                  try:
                      z = zipfile.ZipFile(lib_file)
                      log.error(relative_folder + template_name)
                      template_path_in_zip = os.path.join(relative_folder, template_name).replace("\\", "/")
                      source = z.read(template_path_in_zip)
                  except (IOError, KeyError) as e:
                      import traceback
                      log.error(traceback.format_exc())
                      try:
                          z.close()
                      except:
                          pass
                      continue
                  z.close()
                  # We found a template, so return the source.
                  template_path = "%s:%s" % (lib_file, template_path_in_zip)
                  return (source, template_path)
  
          # If we reach here, the template couldn't be loaded
          raise TemplateDoesNotExist(template_name)