Localhost always stuck in this line?

[resting]

Is anyone facing the same problem, trying to run on localhost but the loop doesn't exit?
https://github.com/chadhutchins/codeigniter-mcurl/blob/master/application/libraries/mcurl.php#L136

Have tried to execute the curl command manually and it is working fine.

Using localhost:8000 to access.
curl 7.52.1