Error creating new snapshots


I have upgraded my Rockstor Storage to version 3.8.15 and now the Gui give me an error when I click to create a new snapshot (read only and set “visible”). Error:

Houston, we’ve had a problem.
writable must be a boolean, not <type ‘unicode’>

        Traceback (most recent call last):

File “/opt/rockstor/eggs/gunicorn-0.16.1-py2.7.egg/gunicorn/workers/”, line 34, in run
client, addr = self.socket.accept()
File “/usr/lib64/python2.7/”, line 202, in accept
sock, addr = self._sock.accept()
error: [Errno 11] Resource temporarily unavailable

I do a Clean install of the new version of RockStor, import the discs and the problem continues.

Thanks for help.

Best Regards