mxnet/module/base_module.py“, line 855, in forward raise NotImplementedError()

Traceback (most recent call last):
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/train_0305.py", line 497, in <module>
    main()
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/train_0305.py", line 493, in main
    train_net()
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/train_0305.py", line 487, in train_net
    epoch_end_callback=epoch_cb)
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/parall_module_0310.py", line 699, in fit
    batch_end_callback(batch_end_params)
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/train_0305.py", line 391, in _batch_callback
    acc_list = ver_test(mbatch)
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/train_0305.py", line 346, in ver_test
    None, None)
  File "/home/user1/pjs/frvt/mask/arcface_Siamese_offline/recognition/eval/verification.py", line 254, in test
    model.forward(db, is_train=False, )
  File "/home/user1/.local/lib/python2.7/site-packages/mxnet/module/base_module.py", line 855, in forward
    raise NotImplementedError()
NotImplementedError

没有定义forward函数