[Python] Error on testing password for zip file: zlib.error: Error -3 while decompressing...

I am trying to find the forgotten password for my zip file with following code:

while found == False:
password = bytes(word, 'utf-8')
print('Trying ' + word)
zip = zipfile.ZipFile(zipFilename)
zip.setpassword(password)
try:
bad_file = zip.testzip() # if anything returned without error then password was correct
#zip.extractall(pwd=password)
print('Password is ' + word)
found = True
exit()
except RuntimeError as e:
if e.args[0].startswith('Bad password for file'):
continue
raise e # throw any other exception to print on console


Loop is working as expected for the first 472 tries. Afterwards it is alway throwing following exception:

File "C:\Users\<mypath>\zipcrack2.py", line 376, in <module>
bad_file = zip.testzip() # if anything returned without error then password was correct
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.2032.0_x64__qbz5n2kfra8p0\Lib\zipfile\__init__.py", line 1558, in testzip
while f.read(chunk_size): # Check CRC-32
~~~~~~^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.2032.0_x64__qbz5n2kfra8p0\Lib\zipfile\__init__.py", line 1015, in read
data = self._read1(n)
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.2032.0_x64__qbz5n2kfra8p0\Lib\zipfile\__init__.py", line 1091, in _read1
data = self._decompressor.decompress(data, n)
zlib.error: Error -3 while decompressing data: invalid stored block lengths


Has someone an idea, what the issue is causing? BTW: Same issue with extractall.

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