ftp - InternetOpenUrl failed: '' download.file in R -

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i trying download file following : "download.file(url,"db.zip", "auto", quiet = false, mode = "wb", cacheok = true)"

but keep getting error stating in download.file(url, "db.zip", "auto", quiet = false, mode = "wb", : internetopenurl failed: '' i've searched countless places , haven't found valid reason. , says theirs working


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