Unable to use CheckstyleBear in .coafile

[csndylim]

Executing section CheckstyleBear...
[ERROR][07:51:00] An unknown error occurred. This is a bug. We are sorry for the inconvenience. Please contact the developers for assistance. During execution of coala an exception was raised. This should never happen. When asked for, the following information may help investigating:
[INFO][07:51:00] Exception was:
Traceback (most recent call last):
File "/coala/coalib/coala_main.py", line 113, in run_coala
console_printer=console_printer)
File "/coala/coalib/processes/Processing.py", line 710, in execute_section
console_printer=console_printer)
File "/coala/coalib/processes/Processing.py", line 384, in instantiate_processes
console_printer=console_printer)
File "/coala/coalib/processes/Processing.py", line 321, in instantiate_bears
timeout=0.1)]
File "/coala/coalib/processes/Processing.py", line 315, in
local_bear_list = [bear
File "/coala/coalib/processes/Processing.py", line 291, in filter_raising_callables
yield elem(*args, **kwargs)
File "/usr/lib/python3.6/site-packages/coala_utils/decorators.py", line 343, in decorated
return function(*args, **kwargs)
File "/coala/coalib/bears/Bear.py", line 244, in init
self.setup_dependencies()
File "/coala-bears/bears/java/CheckstyleBear.py", line 58, in setup_dependencies
'checkstyle-6.19.jar')
File "/coala/coalib/bears/Bear.py", line 464, in download_cached_file
response.raise_for_status()
File "/usr/lib/python3.6/site-packages/requests/models.py", line 909, in raise_for_status
raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 404 Client Error: Not Found for url: https://sourceforge.net/projects/checkstyle/files/checkstyle/6.19/checkstyle-6.19-all.jar