urllib2.HTTPError: HTTP Error 500: Internal Server Error

[dlorenzomop]

Version CF CLI :
cf.exe version 6.34.1+bbdf814.2018-04-10

Todays, I obtain an error on step "-- Installing IBM DB CLI Drivers -----------------"

Traceback (most recent call last):
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/scripts/compile.py", line 47, in
.from_build_pack('lib/additional_commands')
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/lib/build_pack_utils/builder.py", line 208, in extensions
process_extension(path, ctx, 'compile', process, args=[self])
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/lib/build_pack_utils/utils.py", line 69, in process_extension
success(getattr(extn, to_call)(*args))
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/lib/extension_helpers.py", line 48, in extension_helper_wrapper
return getattr(inst, 'compile')(install)
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/lib/extension_helpers.py", line 154, in compile
self._compile(install)
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/extensions/ibmdb/extension.py", line 75, in _compile
self.install_clidriver()
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/extensions/ibmdb/extension.py", line 154, in install_clidriver
True)
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/extensions/ibmdb/extension.py", line 100, in _install_direct
self._installer._dwn.custom_extension_download(url, url, fileToInstall)
File "/tmp/buildpacks/fe1645fb820e2d5e4218966ac9a91b15/lib/build_pack_utils/downloads.py", line 46, in custom_extension_download
res = urllib2.urlopen(url)
File "/usr/lib/python2.7/urllib2.py", line 127, in urlopen
return _opener.open(url, data, timeout)
File "/usr/lib/python2.7/urllib2.py", line 410, in open
response = meth(req, response)
File "/usr/lib/python2.7/urllib2.py", line 523, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib/python2.7/urllib2.py", line 448, in error
return self._call_chain(*args)
File "/usr/lib/python2.7/urllib2.py", line 382, in _call_chain
result = func(*args)
File "/usr/lib/python2.7/urllib2.py", line 531, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 500: Internal Server Error
Failed to compile droplet
Exit status 223
Staging failed: Exited with status 223

For information, yesterday no error occurred.