code: def _send_err_to_host(self, ret_error):
      host_errors = ret_error
      idx = 0
      for host in self.ctx.hosts:
          host.put(
              self._bw_suffix.format(self._bw_count), host_errors[idx]
          )
          idx += 1
      self._bw_count += 1
  
imports: import torch
  from typing import List, Literal
  import torch
  from fate.arch import Context
  from torch.nn.modules.module import T
label_desc: Use image node_id 5 for calling the AggLayerGuest obj's underlying member method code with example usage: obj._send_err_to_host(ret_error) without return types