cuckoo Error "IOError: [Errno 5] Input/output error"

Question

Traceback (most recent call last): File "/home/ubuntu/.virtualenvs/cuckoo-test/bin/vmcloak", line 8, in <module> sys.exit(main()) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/click/core.py", line 716, in call return self.main(*args, **kwargs) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/click/core.py", line 696, in main rv = self.invoke(ctx) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/click/core.py", line 1060, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/click/core.py", line 889, in invoke return ctx.invoke(self.callback, **ctx.params) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/click/core.py", line 534, in invoke return callback(*args, **kwargs) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/vmcloak/main.py", line 251, in init if not h.buildiso(mount, iso_path, bootstrap, tempdir): File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/vmcloak/abstract.py", line 250, in buildiso copytreelower(mount, outdir) File "/home/ubuntu/.virtualenvs/cuckoo-test/local/lib/python2.7/site-packages/vmcloak/misc.py", line 53, in copytreelower os.path.join(dstdir, path.lower())) File "/usr/lib/python2.7/shutil.py", line 98, in copyfile copyfileobj(fsrc, fdst) File "/usr/lib/python2.7/shutil.py", line 63, in copyfileobj buf = fsrc.read(length) IOError: [Errno 5] Input/output error`