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Re: [sumo-user] libsumo.libsumo.FatalTraCIError: A network was not yet constructed.
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Hi,
it may also be that you did call start but the parameters were invalid.
Do you change the sumo config / the input files between the runs? So you
may accidentally give an invalid input in the 232nd run.
Best regards,
Michael
Am 04.09.22 um 20:04 schrieb Hriday Sanghvi via sumo-user:
Hello,
I have been running SUMO along with a reinforcement learning algorithm
that reruns a TraCI simulation from scratch each episode. When I was
placing a static blockage (stopped vehicle) in the same location every
episode, it was working just fine. But now that I am changing the
location and size of this blockage every episode, after a certain number
of 'episodes' (232, to be precise), SUMO throws an error:
File "/.../marlenvironment.py", line 797, in step
for vh in self.simulation.traci_handler.vehicle.getIDList(): #
Set LC mode from the beginning
*libsumo.libsumo.FatalTraCIError: A network was not yet constructed.*
are the SUMO-relevant lines from the stack trace that causes the system
to stop functioning.
My understanding of this is that it is telling me that I am calling
traci.start() before a traci.close() was called on a previous
traci.start() - But I am unsure how to debug this and cannot see how
this could have happened with the change I mentioned above, and why it
happens only after 232 runs of the simulation?
Please advise. Thank you.
Sincerely,
Hriday
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