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KeyError                                  Traceback (most recent call last)
Input In [28], in <cell line: 9>()
      6 data = df.copy()
      8 # Reshape the dataset into a transactional format
----> 9 transactions = data[['ticket_category', 'ticket_type', 'ticket_item', 'ticket_summary',
     10                     'ticket_severity', 'resolution_sla_violated', 'reopen_count',
     11                     'role_id', 'ticket_resolution_time']].values.tolist()
     13 # Apply one-hot encoding to convert the data into a suitable format for Apriori algorithm
     14 te = TransactionEncoder()

File /Analytics/venv/CAPEANALYTICS/lib/python3.8/site-packages/pandas/core/frame.py:3461, in DataFrame.__getitem__(self, key)
   3459     if is_iterator(key):
   3460         key = list(key)
-> 3461     indexer = self.loc._get_listlike_indexer(key, axis=1)[1]
   3463 # take() does not accept boolean indexers
   3464 if getattr(indexer, "dtype", None) == bool:

File /Analytics/venv/CAPEANALYTICS/lib/python3.8/site-packages/pandas/core/indexing.py:1314, in _LocIndexer._get_listlike_indexer(self, key, axis)
   1311 else:
   1312     keyarr, indexer, new_indexer = ax._reindex_non_unique(keyarr)
-> 1314 self._validate_read_indexer(keyarr, indexer, axis)
   1316 if needs_i8_conversion(ax.dtype) or isinstance(
   1317     ax, (IntervalIndex, CategoricalIndex)
   1318 ):
   1319     # For CategoricalIndex take instead of reindex to preserve dtype.
   1320     #  For IntervalIndex this is to map integers to the Intervals they match to.
   1321     keyarr = ax.take(indexer)

File /Analytics/venv/CAPEANALYTICS/lib/python3.8/site-packages/pandas/core/indexing.py:1374, in _LocIndexer._validate_read_indexer(self, key, indexer, axis)
   1372     if use_interval_msg:
   1373         key = list(key)
-> 1374     raise KeyError(f"None of [{key}] are in the [{axis_name}]")
   1376 not_found = list(ensure_index(key)[missing_mask.nonzero()[0]].unique())
   1377 raise KeyError(f"{not_found} not in index")

KeyError: "None of [Index(['ticket_category', 'ticket_type', 'ticket_item', 'ticket_summary',\n       'ticket_severity', 'resolution_sla_violated', 'reopen_count', 'role_id',\n       'ticket_resolution_time'],\n      dtype='object')] are in the [columns]"