Yolov3_tiny python mo_tf.py run error

[18501955449]

scale = 1. / np.sqrt(variance.value + eps)
[ ERROR ] -------------------------------------------------
[ ERROR ] ----------------- INTERNAL ERROR ----------------
[ ERROR ] Unexpected exception happened.
[ ERROR ] Please contact Model Optimizer developers and forward the following information:
[ ERROR ]
[ ERROR ] Traceback (most recent call last):
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\main.py", line 312, in main
return driver(argv)
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\main.py", line 263, in driver
is_binary=not argv.input_model_is_text)
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\pipeline\tf.py", line 141, in tf2nx
graph_clean_up_tf(graph)
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\middle\passes\eliminate.py", line 186, in graph_clean_up_tf
graph_clean_up(graph, ['TFCustomSubgraphCall', 'Shape'])
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\middle\passes\eliminate.py", line 181, in graph_clean_up
add_constant_operations(graph)
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\middle\passes\eliminate.py", line 145, in add_constant_operations
Const(graph, dict(value=node.value, shape=np.array(node.value.shape))).create_node_with_data(data_nodes=node)
File "C:\Intel\openvino_2019.1.148\deployment_tools\model_optimizer\mo\ops\op.py", line 207, in create_node_with_data
[np.array_equal(old_data_value[id], data_node.value) for id, data_node in enumerate(data_nodes)])
AssertionError

[ ERROR ] ---------------- END OF BUG REPORT --------------
[ ERROR ] -------------------------------------------------