Getting assertion error after on uncompyle6 about pyinstxtractor HOT 4 CLOSED

>>> import marshal
... import dis
... f=open('backup_decryptor.pyc','rb')
... f.seek(16)
... co=marshal.load(f)
>>> dis.dis(co)
  1           0 STORE_GLOBAL             0 (builtins)
        >>    2 STORE_GLOBAL             1 (bi)
              4 IMPORT_NAME              0 (builtins)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "c:\users\administrator\miniconda3\envs\py38\lib\dis.py", line 79, in dis
    _disassemble_recursive(x, file=file, depth=depth)
  File "c:\users\administrator\miniconda3\envs\py38\lib\dis.py", line 373, in _disassemble_recursive
    disassemble(co, file=file)
  File "c:\users\administrator\miniconda3\envs\py38\lib\dis.py", line 369, in disassemble
    _disassemble_bytes(co.co_code, lasti, co.co_varnames, co.co_names,
  File "c:\users\administrator\miniconda3\envs\py38\lib\dis.py", line 401, in _disassemble_bytes
    for instr in _get_instructions_bytes(code, varnames, names,
  File "c:\users\administrator\miniconda3\envs\py38\lib\dis.py", line 345, in _get_instructions_bytes
    argval, argrepr = _get_name_info(arg, varnames)
  File "c:\users\administrator\miniconda3\envs\py38\lib\dis.py", line 304, in _get_name_info
    argval = name_list[name_index]
IndexError: tuple index out of range

$ python3 --version
Python 3.8.2
$ python3 backup_decryptor.pyc 
Segmentation fault (core dumped)