STRANGE ERROR

[Riccardo Susini]

No numeric types to aggregateNo numeric types to aggregate

Exiting Temoa ...

Traceback (most recent call last):

  File "temoa_model\temoa_run.py", line 275, in createAndSolve

    for k in self.solveWithoutMGA():

  File "temoa_model\temoa_run.py", line 247, in solveWithoutMGA

    for k in temoaInstance1.solve_temoa_instance():

  File "temoa_model\temoa_run.py", line 413, in solve_temoa_instance

    raise model_exc

  File "temoa_model\temoa_run.py", line 392, in solve_temoa_instance

    formatted_results = pformat_results( self.instance, self.result, self.options )

  File "temoa_model\pformat_results.py", line 546, in pformat_results

    make_excel(options.output, new_dir+os.sep+options.scenario, temp_scenario)

  File "C:\Users\ricca\PycharmProjects\TEMOApythonProject\temoa-energysystem\data_processing\DB_to_Excel.py", line 78, in make_excel

    df_emissions = df_emissions_raw.pivot_table(values='emissions', index=['regions', 'tech', 'sector','emissions_comm'], columns='t_periods')

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\frame.py", line 7041, in pivot_table

    observed=observed,

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\reshape\pivot.py", line 113, in pivot_table

    agged = grouped.agg(aggfunc)

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\groupby\generic.py", line 945, in aggregate

    result, how = aggregate(self, func, *args, **kwargs)

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\aggregation.py", line 579, in aggregate

    return obj._try_aggregate_string_function(arg, *args, **kwargs), None

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\base.py", line 315, in _try_aggregate_string_function

    return f(*args, **kwargs)

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\groupby\groupby.py", line 1499, in mean

    numeric_only=numeric_only,

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\groupby\generic.py", line 1016, in _cython_agg_general

    how, alt=alt, numeric_only=numeric_only, min_count=min_count

  File "C:\Users\ricca\anaconda3\envs\temoa-py3\lib\site-packages\pandas\core\groupby\generic.py", line 1121, in _cython_agg_blocks

    raise DataError("No numeric types to aggregate")

pandas.core.base.DataError: No numeric types to aggregate

The program gives me this error when I delete all the constraints without changing anything, while imposing some constraints brings to no solution. Why ?