Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/home/user/.pyenv/versions/3.8.1/lib/python3.8/site-packages/modin/pandas/dataframe.py", line 1472, in join

query_compiler=self._query_compiler.concat(


 "/home/user/.pyenv/versions/3.8.1/lib/python3.8/site-packages/modin/backends/pandas/query_compiler.py", line 265, in concat

new_modin_frame = self._modin_frame._concat(axis, other_modin_frame, join, sort)


 "/home/user/.pyenv/versions/3.8.1/lib/python3.8/site-packages/modin/engines/base/frame/data.py", line 1773, in _concat

new_partitions = self._frame_mgr_cls.concat(axis, left_parts, right_parts)


 "/home/user/.pyenv/versions/3.8.1/lib/python3.8/site-packages/modin/engines/base/frame/partition_manager.py", line 392, in concat

return np.concatenate([left_parts] + right_parts, axis=axis)


 "<__array_function__ internals>", line 5, in concatenate
ValueError: all the input array dimensions for the concatenation axis must match exactly, but along dimension 0, the array at index 0 has size 2 and the array at index 1 has size 1

Traceback (most recent call last):


 "site-packages\calibre\utils\formatter.py", line 375, in safe_format


 "site-packages\calibre\utils\formatter.py", line 340, in evaluate


 "site-packages\calibre\utils\formatter.py", line 264, in _eval_program


 "site-packages\calibre\utils\formatter.py", line 106, in program


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 157, in expr


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 157, in expr


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 157, in expr


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 169, in expr


 "site-packages\calibre\utils\formatter_functions.py", line 132, in eval_


 "site-packages\calibre\utils\formatter_functions.py", line 359, in evaluate


 "site-packages\calibre\ebooks\metadata\book\formatter.py", line 32, in get_value
ValueError: Value: unknown field #genre
