Traceback (most recent call last):


 "/home/czgdp1807ssd/sympy_project/sympy/sympy/core/assumptions.py", line 260, in getit

return self._assumptions[fact]
KeyError: 'zero'

Traceback (most recent call last):


 "/work/src/experiment/reporter.py", line 43, in output_report

in_progress=in_progress)


 "/work/src/experiment/generate_report.py", line 123, in generate_report

in_progress)


 "/work/src/analysis/rendering.py", line 41, in render_report

in_progress=in_progress)


 "/work/.venv/lib/python3.7/site-packages/jinja2/environment.py", line 1090, in render

self.environment.handle_exception()


 "/work/.venv/lib/python3.7/site-packages/jinja2/environment.py", line 832, in handle_exception

reraise(*rewrite_traceback_stack(source=source))


 "/work/.venv/lib/python3.7/site-packages/jinja2/_compat.py", line 28, in reraise

raise value.with_traceback(tb)


 "/work/src/analysis/report_templates/default.html", line 81, in top-level template code

src="{{ experiment.critical_difference_plot }}">


 "/work/.venv/lib/python3.7/site-packages/jinja2/environment.py", line 471, in getattr

return getattr(obj, attribute)


 "/work/src/analysis/experiment_results.py", line 169, in critical_difference_plot

average_ranks = self.rank_by_median


 "/work/src/analysis/experiment_results.py", line 109, in rank_by_median

self._experiment_snapshots_df, data_utils.rank_by_median)


 "/work/src/analysis/data_utils.py", line 189, in experiment_pivot_table

benchmark_blocks = experiment_snapshots_df.groupby('benchmark')


 "/work/.venv/lib/python3.7/site-packages/pandas/core/frame.py", line 5810, in groupby

observed=observed,


 "/work/.venv/lib/python3.7/site-packages/pandas/core/groupby/groupby.py", line 409, in __init__

mutated=self.mutated,


 "/work/.venv/lib/python3.7/site-packages/pandas/core/groupby/grouper.py", line 598, in get_grouper

raise KeyError(gpr)
KeyError: 'benchmark'
