[Help Request]sumo.tools.traci.exceptions.FatalTraCIError: Connection closed by SUMO.

[DOPEMANdd]

High Level Description

When I am training in the comp-1 branch, the program always breaks, how to solve this problem?

Version

comp-1

Operating System

ubuntu22.04

Problems

Traceback (most recent call last):
File "train_ppo.py", line 83, in
state, dones = env.reset(), {"all": False}
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/gym/core.py", line 251, in reset
return self.env.reset(**kwargs)
File "/data/zhangdi/SMARTS/smarts/env/multi_scenario_env.py", line 341, in reset
obs = self.env.reset(**kwargs)
File "/data/zhangdi/SMARTS/smarts/env/hiway_env.py", line 269, in reset
env_observations = self._smarts.reset(scenario)
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 410, in reset
raise first_exception
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 403, in reset
return self._reset(scenario, start_time)
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 440, in _reset
self.setup(scenario)
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 470, in setup
provider_state = self._setup_providers(self._scenario)
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 1112, in _setup_providers
new_provider_state = self._handle_provider(provider, provider_error)
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 1171, in _handle_provider
raise provider_error
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 1110, in _setup_providers
new_provider_state = provider.setup(scenario)
File "/data/zhangdi/SMARTS/smarts/core/sumo_traffic_simulation.py", line 334, in setup
self._traci_conn.simulation.subscribe(
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/sumo/tools/traci/_simulation.py", line 671, in subscribe
Domain.subscribe(self, "", varIDs, begin, end)
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/sumo/tools/traci/domain.py", line 188, in subscribe
self._connection._subscribe(self._subscribeID, begin, end, objectID, varIDs, parameters)
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/sumo/tools/traci/connection.py", line 295, in _subscribe
result = self._sendCmd(cmdID, (begin, end), objID, format, *args)
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/sumo/tools/traci/connection.py", line 231, in _sendCmd
return self._sendExact()
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/sumo/tools/traci/connection.py", line 137, in _sendExact
raise FatalTraCIError("Connection closed by SUMO.")
sumo.tools.traci.exceptions.FatalTraCIError: Connection closed by SUMO.
Exception ignored in: <function SMARTS.del at 0x7fc409614940>
Traceback (most recent call last):
File "/data/zhangdi/SMARTS/smarts/core/smarts.py", line 856, in del
TypeError: 'NoneType' object is not callable
Exception ignored in: <function _ShowBaseInstance.del at 0x7fc406e73940>
Traceback (most recent call last):
File "/data/zhangdi/SMARTS/smarts/core/renderer.py", line 140, in del
File "/data/zhangdi/SMARTS/smarts/core/renderer.py", line 136, in destroy
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/direct/showbase/ShowBase.py", line 601, in destroy
TypeError: 'NoneType' object is not callable
Exception ignored in: <function BulletClient.del at 0x7fc433673c10>
Traceback (most recent call last):
File "/data/zhangdi/anaconda3/envs/smart/lib/python3.8/site-packages/pybullet_utils/bullet_client.py", line 43, in del
TypeError: catching classes that do not inherit from BaseException is not allowed

[adai]

Hi @DOPEMANdd,

1. The comp-1 branch was used for 2022 NeurIPS Driving Smarts competition and has since been archived, with no further updates expected.

2. Going forward, please use the latest code version from the master branch. The latest code version sidesteps the sumo.tools.traci.exceptions.FatalTraCIError: Connection closed by SUMO error.

3. If you are interested in training and benchmarking your agents, please consider using the latest Driving Smarts 2023.1 & 2023.2 and Driving Smarts 2023.3 benchmarks.