angryfuzzer stops after 4 requests

As titles says, the tool stops just after 4 requests, regardless of which site I use:

python angryFuzzer.py -u http://192.168.174.131

---

/ _ \ ____ ___________ .._ / _ _
/ /\ \ / \ / _ __ < | | | )| | _ /_ / ( < __ "
/ | \ | / // > | /_ | | \ | | // / / / / \ | /
_| /| /__ /|| / | _ / |__//___ /_____ /______ /|
/ //___/ / / / / /

============>https://github.com/ihebski/angryFuzzer
===========================================> by Sold1er

[+] [11:55:42] - [404] - [/!.gitignore/] -> http://192.168.174.131/!.gitignore/
[+] [11:55:42] - [404] - [/!.htaccess/] -> http://192.168.174.131/!.htaccess/
[+] [11:55:42] - [404] - [/!.htpasswd/] -> http://192.168.174.131/!.htpasswd/
[+] [11:55:42] - [404] - [/%3f/] -> http://192.168.174.131/%3f/

Also the pip install fails as follow:

sudo pip install -r requirements.txt
Requirement already satisfied: requests in /usr/local/lib/python2.7/dist-packages/requests-2.5.0-py2.7.egg (from -r requirements.txt (line 1)) (2.5.0)
Collecting optparse (from -r requirements.txt (line 2))
Could not find a version that satisfies the requirement optparse (from -r requirements.txt (line 2)) (from versions: )
No matching distribution found for optparse (from -r requirements.txt (line 2))