error : Can't pickle local object 'ReinsuranceProfile.__init__.<locals>.<listcomp>.<lambda>'

[uh-reza]

as running
start.py -f test1 --save_iterations 10

comes up with this error:
Traceback (most recent call last):
File "C:\WPy64-3740\notebooks\isle-master\start.py", line 113, in main
save_simulation(t + 1, simulation, sim_params, exit_now=False)
File "C:\WPy64-3740\notebooks\isle-master\start.py", line 148, in save_simulation
pickle.dump(d, wfile, protocol=pickle.DEFAULT_PROTOCOL)
AttributeError: Can't pickle local object 'ReinsuranceProfile.init...'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\WPy64-3740\notebooks\isle-master\start.py", line 428, in
summary=summary,
File "C:\WPy64-3740\notebooks\isle-master\start.py", line 126, in main
raise Exception("".join(traceback.format_exception(*sys.exc_info()))[-900:])
Exception: Traceback (most recent call last):
File "C:\WPy64-3740\notebooks\isle-master\start.py", line 113, in main
save_simulation(t + 1, simulation, sim_params, exit_now=False)
File "C:\WPy64-3740\notebooks\isle-master\start.py", line 148, in save_simulation
pickle.dump(d, wfile, protocol=pickle.DEFAULT_PROTOCOL)
AttributeError: Can't pickle local object 'ReinsuranceProfile.init...'

any idea, please?