curl returning 301 error after migrating to https

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);

// conditions to send sms 

$data = array('username' => $username, 'apikey' => $apikey, 'numbers' => $mobile, "sender" => $sender, "message" => $msg);

if($this->sms_env == true)
{

    $ch = curl_init('https://api.textlocal.in/send?');

    curl_setopt($ch, CURLOPT_POST, true);

    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);

    $response = curl_exec($ch);

    $decoded_response = json_decode($response, true);

    curl_close($ch);

    $sms_status = @$decoded_response['status'];

    $status['sms'] = $sms_status;
}

$db_data = array(
    'sms_response'  => @$response,
    'unique_code'   => @$unique_code,
    'mobile_no'     => @$mobile,
    'message'       => @$msg,
    'username'      => $username,
    'apikey'        => $apikey,
    'sender_id'     => $sender
);

return $db_data;