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tutorials lesson 4

hi all

when I went to the step of " query pricing data for all assets" I have found this error

/usr/local/lib/python2.7/dist-packages/bcolz/ctable.pyc in read_meta_and_open(self) 38 # Get the directories of the columns
39 rootsfile = os.path.join(self.rootdir, ROOTDIRS)
---> 40 with open(rootsfile, 'rb') as rfile:
41 data = json.loads(rfile.read().decode('ascii'))
42 # JSON returns unicode, but we want plain bytes for Python 2.x

IOError: [Errno 13] Permission denied: '/mnt/findata/equity.dailies/2019-02-01/equity_daily_bars.bcolz/rootdirs'

can anybody help me on this issue ?

thanks in advance