zero values not permitted in the "number_of_people_per_household" column

[shakythesherpa]

When we have a dataset with an override column for "number_of_people_per_household" and some of the values in the column are zeroes then we get the following error:

Running electrificationplanner
Reading input from /home/mr/modelrunner/worker_data/032f9377-3ba3-4444-8ad2-8eee90b39d74/input
~/infrastructure-planning ~/modelrunner
estimate_population
estimate_population_profile
estimate_consumption_from_connection_type
Traceback (most recent call last):
File "estimate_electricity_cost_by_technology_from_population.py", line 300, in
], x.parse_args().dict, FULL_KEYS)
File "/home/mr/infrastructure-planning/infrastructure_planning/macros.py", line 57, in load_and_run
run(main_functions, g)
File "/home/mr/infrastructure-planning/infrastructure_planning/macros.py", line 138, in run
node_d.update(compute(f, l, g))
File "/home/mr/infrastructure-planning/infrastructure_planning/macros.py", line 188, in compute
value_by_key = rename_keys(compute_raw(f, l, g) or {}, prefix=prefix)
File "/home/mr/infrastructure-planning/infrastructure_planning/macros.py", line 205, in compute_raw
return f(**merge_dictionaries(g, l))
File "/home/mr/infrastructure-planning/infrastructure_planning/electricity/consumption/linear.py", line 25, in estimate_consumption_from_connection_type
estimated_household_connection_count_by_year)
File "/home/mr/infrastructure-planning/infrastructure_planning/electricity/consumption/linear.py", line 135, in _get_connection_count_by_year
year_index = estimated_household_connection_count_by_year.index
AttributeError: 'int' object has no attribute 'index'
~/modelrunner