message: training: fixed error message
diff: @@ -15,7 +15,7 @@ def get_latest_checkpoint_epoch(cfg):
  checkpoint_dir = os.path.join(get_result_dir(cfg), 'checkpoints')
  latest_filename = os.path.join(checkpoint_dir, 'latest')
  if not os.path.isfile(latest_filename):
  - error('result does not exist')
  + error('no checkpoints found')
  with open(latest_filename, 'r') as f:
  return int(f.readline())
  