Correlations fail on group-by data

[KenMacD]

Use Summarize Data to group some values together by mean. Then try to run Correlations on the resulting instance results in the error:

Traceback (most recent call last):
  File "dtale/views.py", line 114, in _handle_exceptions
    return func(*args, **kwargs)
  File "dtale/views.py", line 2641, in get_correlations
    matrix_code.format(
KeyError: "\n\t'medianResTime'"

In this case the table column label is meanResTime mean