RuntimeError: mae_label is not presented, while testing?

I have trained a ResNet-100 model on my dataset whose output is a float (the Last layer is MAERegressionOutput().

The script is as below:
import mxnet as mx
import argparse
import pickle
import os
import numpy as np

testIter = mx.io.ImageRecordIter(
	path_imgrec='test.rec',
	data_shape=(3, 112, 112),
	batch_size=90)

epoch = 4
(symbol, argParams, auxParams) = mx.model.load_checkpoint('age-mse-tutorial-model-r100s', epoch)

# construct the model
model = mx.mod.Module(symbol=symbol, context=[mx.gpu(0)])
model.bind(data_shapes=[('data', (1, 3, 112, 112))], 
           label_shapes=[('mae_label', (1,))] )
model.set_params(argParams, auxParams)

metric = mx.metric.MAE()
score = model.score(testIter, metric)
print(score)

The error which is I am getting is

[13:25:28] src/io/iter_image_recordio_2.cc:172: ImageRecordIOParser2: test.rec, use 4 threads for decoding..
/home/anubhav/anaconda3/envs/trueface3.6/lib/python3.6/site-packages/mxnet/module/base_module.py:55: UserWarning: You created Module with Module(..., label_names=['softmax_label']) but input with name 'softmax_label' is not found in symbol.list_arguments(). Did you mean one of:
	data
	mae_label
  warnings.warn(msg)
/home/anubhav/anaconda3/envs/trueface3.6/lib/python3.6/site-packages/mxnet/module/base_module.py:67: UserWarning: Data provided by label_shapes don't match names specified by label_names ([DataDesc[mae_label,(1,),<class 'numpy.float32'>,NCHW]] vs. ['softmax_label'])
  warnings.warn(msg)
Traceback (most recent call last):
  File "test_1.py", line 27, in <module>
    model.set_params(argParams, auxParams)
  File "/home/anubhav/anaconda3/envs/trueface3.6/lib/python3.6/site-packages/mxnet/module/module.py", line 350, in set_params
    allow_extra=allow_extra)
  File "/home/anubhav/anaconda3/envs/trueface3.6/lib/python3.6/site-packages/mxnet/module/module.py", line 309, in init_params
    _impl(desc, arr, arg_params)
  File "/home/anubhav/anaconda3/envs/trueface3.6/lib/python3.6/site-packages/mxnet/module/module.py", line 300, in _impl
    raise RuntimeError("%s is not presented" % name)
RuntimeError: mae_label is not presented

Could anyone suggest what’s wrong here?

This looks like a MXNet framework that is throwing error. Could you tag this as MXNet?