ZODB 5.2.2 - missing import / /ZODB/blob.py", line 397

[papachoco]

File "/home/ntiuser/buildout/eggs/ZODB-5.2.2-py2.7.egg/ZODB/config.py", line 131, in open
storage = section.storage.open()
File "/home/ntiuser/buildout/eggs/zc.zlibstorage-1.2.0-py2.7.egg/zc/zlibstorage/init.py", line 211, in open
base = self.config.base.open()
File "/home/ntiuser/buildout/eggs/RelStorage-2.1a1-py2.7-linux-x86_64.egg/relstorage/config.py", line 36, in open
return RelStorage(adapter, name=config.name, options=options)
File "/home/ntiuser/buildout/eggs/RelStorage-2.1a1-py2.7-linux-x86_64.egg/relstorage/storage.py", line 261, in init
self.blobhelper = BlobHelper(options=options, adapter=adapter)
File "/home/ntiuser/buildout/eggs/RelStorage-2.1a1-py2.7-linux-x86_64.egg/relstorage/blobhelper.py", line 62, in init
fshelper.checkSecure()
File "/home/ntiuser/buildout/eggs/ZODB-5.2.2-py2.7.egg/ZODB/blob.py", line 397, in checkSecure
warnings.warn(
NameError: global name 'warnings' is not defined