AWS Elastic Beanstalk error when uploading Flask application

I recently tried to upload a Flask application to AWS however I received an error stating:

Your requirements.txt is invalid. Snapshot your logs for details.

I uploaded a test application (which I found online) to the server which worked, however my own application does not.

This is what my requirements.txt files looks like:

awsebcli==3.4.5
blinker==1.3
cement==2.4.0
docker-py==1.1.0
dockerpty==0.3.4
docopt==0.6.2
Flask==0.10.1
Flask-Bcrypt==0.6.2
Flask-Mail==0.9.1
itsdangerous==0.24
Jinja2==2.7.3
jmespath==0.7.1
MarkupSafe==0.23
mercurial==3.2.4
pathspec==0.3.3
pbr==1.1.1
plyer==1.2.1
pycrypto==2.6.1
python-bcrypt==0.3.1
python-dateutil==2.4.2
PyYAML==3.11
requests==2.6.2
schedule==0.3.1
six==1.9.0
stevedore==1.5.0
texttable==0.8.3
virtualenv==12.0.4
virtualenv-clone==0.2.5
virtualenvwrapper==4.6.0
websocket-client==0.32.0
Werkzeug==0.10.1
wxPython-common==3.0.2.0

I have no idea what is wrong with it. I have not manually changed it or added anything strange. I only used pip freeze > requirements.txt to build it.

How do I solve this issue? Thanks.