Model Error during perfrom message_ix -> tutorial ->westeros_baseline

[Samtsy1]

I ran into this problem while dealing with the "Time to Solve the Model" phase
In [34]: scenario.solve()

`ModelError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_10264/2994721627.py in
----> 1 scenario.solve()

~\anaconda3\envs\message_env\lib\site-packages\message_ix\core.py in solve(self, model, solve_options, **kwargs)
563 :class:.GAMSModel.
564 """
--> 565 super().solve(model=model, solve_options=solve_options, **kwargs)
566
567 def add_macro(self, data, scenario=None, check_convergence=True, **kwargs):

~\anaconda3\envs\message_env\lib\site-packages\ixmp\core.py in solve(self, model, callback, cb_kwargs, **model_options)
1666 # Iterate until convergence
1667 while True:
-> 1668 model.run(self)
1669
1670 # Store an iteration number to help the callback

~\anaconda3\envs\message_env\lib\site-packages\message_ix\models.py in run(self, scenario)
361
362 try:
--> 363 result = super().run(scenario)
364 finally:
365 # Remove the optfile regardless of whether the run completed

~\anaconda3\envs\message_env\lib\site-packages\ixmp\model\gams.py in run(self, scenario)
294 except CalledProcessError as exc:
295 # Do not remove self.temp_dir; the user may want to inspect the GDX file
--> 296 raise self.format_exception(exc, model_file) from None
297
298 # Read model solution

ModelError: GAMS errored with return code 7:
There was a licensing error

For details, see the terminal output above, plus:
Listing : C:\Users\tsy_s\anaconda3\envs\message_env\lib\site-packages\message_ix\model\MESSAGE_run.lst
Input data: C:\Users\tsy_s\anaconda3\envs\message_env\lib\site-packages\message_ix\model\data\MsgData_Westeros_Electrified_baseline.gdx

`

Hope to get your help,
Thank you.

[behnam-zakeri]

Thanks @Samtsy1 for reaching out. As your error messages shows, there is a problem with your GAMS license. Please be aware that new versions of GAMS don't support a free license even for small problems. For more information, you may refer to MESSAGEix installation notes on this, consult with your colleagues on what type of license you are using in your institution, or you can request a free demo license from GAMS.

[Samtsy1]

Thank you for reminding me. It was really my fault. I installed the latest version of GAMS.

I'll try again. Thank you for your help.