Erro no exercício das moedas: ValueError: If using all scalar values, you must pass an index

Logo ao passar o comando

<<< moedas = pd.DataFrame(eventos) >>>

aparece o seguinte erro:

<<< ValueError: If using all scalar values, you must pass an index >>>

Segue a íntegra:

ValueError                                Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_11792/1873320373.py in <module>
      4             'm4': m4,
      5             'm5': m5}
----> 6 moedas = pd.DataFrame(eventos)
      7 moedas

~\anaconda3\lib\site-packages\pandas\core\frame.py in __init__(self, data, index, columns, dtype, copy)
    612         elif isinstance(data, dict):
    613             # GH#38939 de facto copy defaults to False only in non-dict cases
--> 614             mgr = dict_to_mgr(data, index, columns, dtype=dtype, copy=copy, typ=manager)
    615         elif isinstance(data, ma.MaskedArray):
    616             import numpy.ma.mrecords as mrecords

~\anaconda3\lib\site-packages\pandas\core\internals\construction.py in dict_to_mgr(data, index, columns, dtype, typ, copy)
    462         # TODO: can we get rid of the dt64tz special case above?
    463 
--> 464     return arrays_to_mgr(
    465         arrays, data_names, index, columns, dtype=dtype, typ=typ, consolidate=copy
    466     )

~\anaconda3\lib\site-packages\pandas\core\internals\construction.py in arrays_to_mgr(arrays, arr_names, index, columns, dtype, verify_integrity, typ, consolidate)
    117         # figure out the index, if necessary
    118         if index is None:
--> 119             index = _extract_index(arrays)
    120         else:
    121             index = ensure_index(index)

~\anaconda3\lib\site-packages\pandas\core\internals\construction.py in _extract_index(data)
    623 
    624         if not indexes and not raw_lengths:
--> 625             raise ValueError("If using all scalar values, you must pass an index")
    626 
    627         if have_series:

ValueError: If using all scalar values, you must pass an index