C:\Users\BD9a\Downloads\Krakatau-master>python decompile.py -out resuult file.jar
Krakatau  Copyright (C) 2012-20  Robert Grosse
This program is provided as open source under the GNU General Public License.
See LICENSE.TXT for more details.

Attempting to automatically locate the standard library...
Unable to find the standard library
processing target , 17 remaining
Loading
Traceback (most recent call last):
  File "decompile.py", line 158, in <module>
    decompileClass(path, targets, args.out, args.skip, magic_throw=args.xmagicthrow)
  File "decompile.py", line 101, in decompileClass
    c = e.getClass(target.decode('utf8'))
  File "C:\Users\BD9a\Downloads\Krakatau-master\Krakatau\environment.py", line 24, in getClass
    result = self._loadClass(name)
  File "C:\Users\BD9a\Downloads\Krakatau-master\Krakatau\environment.py", line 87, in _loadClass
    data = self._searchForFile(name)
  File "C:\Users\BD9a\Downloads\Krakatau-master\Krakatau\environment.py", line 81, in _searchForFile
    return archive.read(name)
  File "C:\Python27\lib\zipfile.py", line 958, in read
    return self.open(name, "r", pwd).read()
  File "C:\Python27\lib\zipfile.py", line 653, in read
    data = self.read1(n)
  File "C:\Python27\lib\zipfile.py", line 715, in read1
    self._update_crc(data, eof=eof)
  File "C:\Python27\lib\zipfile.py", line 670, in _update_crc
    raise BadZipfile("Bad CRC-32 for file %r" % self.name)
zipfile.BadZipfile: Bad CRC-32 for file u'.class'