Error: UnboundLocalError: local variable 'most_important_property_df' referenced before assignment in context-match command

[binh-vu]

context-match command relies on the function find_main_entity_column to get the subject column. However, when there are more than one candidate for the subject column, it returns the first column (hard coded - 0), which, in many tables, may not be the entity column. When it's not (in my example), it makes the filtered data frame empty, which leads to the above error:

Stack trace:

Command: context-match
Error Message:  Traceback (most recent call last):
  File "/data/binhvu/table-linker/tl/cli/context-match.py", line 69, in run
    obj = TableContextMatches(context_path=context_file_path, context_dict=None, input_path=input_file_path,
  File "/data/binhvu/table-linker/tl/features/cell_context_matches.py", line 196, in __init__
    self.initialize(input_df, context_dict, label_column)
  File "/data/binhvu/table-linker/tl/features/cell_context_matches.py", line 329, in initialize
    self.input_df = self.process(row_column_pairs, columns)
  File "/data/binhvu/table-linker/tl/features/cell_context_matches.py", line 332, in process
    context_scores, properties, similarities = self.compute_context_scores(n_context_columns, row_column_pairs)
  File "/data/binhvu/table-linker/tl/features/cell_context_matches.py", line 347, in compute_context_scores
    self.compute_property_scores(row_column_pairs, n_context_columns)
  File "/data/binhvu/table-linker/tl/features/cell_context_matches.py", line 413, in compute_property_scores
    self.write_relevant_properties(most_important_property_df)
UnboundLocalError: local variable 'most_important_property_df' referenced before assignment

Test file: test.csv & context.jl.txt
Command:

tl context-match --debug --context-file context.jl --ignore-column-name ignore_candidate -o context_score --similarity-string-threshold 0.85 --similarity-quantity-threshold 0.9 --save-relevant-properties --context-properties-path /data/binhvu/sm-dev/data/home/cache/t211112_entity_linking/table_linker/17th_saskatchewan_legislature/aux_files/context_property.tsv /tmp/test.csv