Created by: luoruiming

When running sh scripts/train_difficulty1.sh ./low_speed_model in /PARL/examples/NeurIPS2019-Learn-to-Move-Challenge, an AssertionError occurred.

`(opensim-rl) luo@idserver:~/PARL/examples/NeurIPS2019-Learn-to-Move-Challenge$ sh scripts/train_difficulty1.sh ./low_speed_model

/home/luo/anaconda3/envs/opensim-rl/bin/python [12-15 11:41:49 MainThread @logger.py:224] Argv: train.py --actor_num 300 --difficulty 1 --penalty_coeff 3.0 --logdir ./output/difficulty1 --restore_model_path ./low_speed_model /home/luo/anaconda3/envs/opensim-rl/lib/python3.6/site-packages/opensim/simbody.py:15: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses import imp [12-15 11:41:49 MainThread @machine_info.py:86] nvidia-smi -L found gpu count: 4 [12-15 11:41:49 MainThread @machine_info.py:86] nvidia-smi -L found gpu count: 4 W1215 11:41:50.501416 31581 device_context.cc:235] Please NOTE: device: 0, CUDA Capability: 61, Driver API Version: 10.0, Runtime API Version: 10.0 W1215 11:41:50.504907 31581 device_context.cc:243] device: 0, cuDNN Version: 7.5. [12-15 11:41:51 MainThread @machine_info.py:86] nvidia-smi -L found gpu count: 4 Traceback (most recent call last): File "train.py", line 327, in learner = Learner(args) File "train.py", line 78, in init self.agent = OpenSimAgent(algorithm, OBS_DIM, ACT_DIM) File "/home/luo/PARL/examples/NeurIPS2019-Learn-to-Move-Challenge/opensim_agent.py", line 40, in init build_strategy=build_strategy) File "/home/luo/anaconda3/envs/opensim-rl/lib/python3.6/site-packages/paddle/fluid/parallel_executor.py", line 201, in init if share_vars_from else None) File "/home/luo/anaconda3/envs/opensim-rl/lib/python3.6/site-packages/paddle/fluid/compiler.py", line 244, in with_data_parallel assert self._loss_name is not None, "The loss_name should be set here." AssertionError: The loss_name should be set here. `

Does anybody know how to solve that? Thanks in advance.