Connecting to proxy (407 Error) with username/password

[TheGr33k]

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I am unable to use a proxy with youtube-dl.I get the following error

Unable to download webpage: HTTP Error 407: Proxy Authentication Required (caused by HTTPError());

1.My proxy works as i am able to connect to the proxy in my browser just fine.
2.I am able to copy command when display through PHP and run it in shell and get the correct output leading me to believe that there is something wrong with my code.
3.The only characters in username/password are in range [a-zA-Z0-9-_]
4. Verbose show the correct proxy map in shell

$toLoad = "https://www.youtube.com/watch?v=AtKZKl7Bgu0";
$command = "youtube-dl  --proxy http://lum-customer-hl_1234b789-zone-static-country-us:22221111asz@zproxy.lum-superproxy.io:22225 --no-check-certificate --user-agent \"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36\" --socket-timeout 30  \"$toLoad\"  --dump-json";
$yt_json = exec($command.' 2>&1');
echo $yt_json;

[dstftw]

Post the full verbose log.