Traceback (most recent call last):


 "/Users/sincerexu/ParlAI/parlai/core/worlds.py", line 1282, in _create_task_agents

task_agents = my_module.create_agents(opt, task)
# type: ignore
AttributeError: module 'parlai.tasks.fromfile.agents' has no attribute 'create_agents'

Traceback (most recent call last):


 "demo.py", line 99, in <module>

ctx, args.nms_thresh, args.force_nms)


 "demo.py", line 40, in get_detector

.get_symbol(len(CLASSES), nms_thresh, force_nms)


 "/home/wahaha/mxnet-ssd/symbol/symbol_vgg16_ssd_300.py", line 179, in get_symbol

net = get_symbol_train(num_classes)


 "/home/wahaha/mxnet-ssd/symbol/symbol_vgg16_ssd_300.py", line 100, in get_symbol_train

stride=(1,1), act_type="relu", use_batchnorm=False)


 "/home/wahaha/mxnet-ssd/symbol/common.py", line 35, in conv_act_layer

init=mx.init.Constant(0.0), attr={'__lr_mult__': '2.0'})
AttributeError: module 'mxnet.initializer' has no attribute 'Constant'
