Traceback (most recent call last):

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
rv = self.handle_user_exception(e)

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
reraise(exc_type, exc_value, tb)

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
rv = self.dispatch_request()

 "/tmp/spack/env/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)

 "/tmp/spack/env/lib/python2.7/site-packages/sixpack/web.py", line 74, in json_details
obj = simple_markdown(experiment.objectify_by_period(period))

 "/tmp/spack/env/lib/python2.7/site-packages/sixpack/models.py", line 60, in objectify_by_period
objectified_alt = alternative.objectify_by_period(period)

 "/tmp/spack/env/lib/python2.7/site-packages/sixpack/models.py", line 511, in objectify_by_period
'confidence_interval': self.confidence_interval()

 "/tmp/spack/env/lib/python2.7/site-packages/sixpack/models.py", line 751, in confidence_interval
return pow(p * (1 - p) / self.participant_count(), 0.5) * 1.28 * 100ValueError: negative number cannot be raised to a fractional power
Traceback (most recent call last):


 "/home/Username/.local/bin/xsrfprobe", line 15, in <module>

xsrfprobe.startEngine()


 "/home/Username/.local/lib/python2.7/site-packages/xsrfprobe/xsrfprobe.py", line 13, in startEngine

from xsrfprobe.core import main
# import stuff
ImportError: No module named core
