r - Error when trying to read .csv files from Github -

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i trying read few csv files github r using import function package rio getting error displayed below.

error in fread(input = file, sep = sep, sep2 = "auto", header = header,  :    supplied 'sep' not found on line 1. read file single character column set sep='\n'.

the code have used 

import("https://raw.github.com/smbilal/scc413/blob/master/hp.csv")

the file can seen using above url , comma separated file cannot seem figure out problem. have tried other methods "geturl" ends throwing ssl error , description below.

error in function (type, msg, aserror = true)  :    ssl certificate problem: unable local issuer certificate

could still problem ssl cant seem read files using "import" or making other mistake?


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