so I made this small app on heroku using django. 
Everything is working correctly on my computer, including this URL
 <http://regina-jobz.herokuapp.com/job/search/1/1/>
Unfortunately, I get a 400 error and I initially I had no means to know what went wrong.
I used the addon named "Bugsnag" to track the error and it finally showed me this : 

```
django.core.exceptions.SuspiciousOperation: Attempted access to 'https:/reginaemploi.s3.amazonaws.com/static/images/company-logo/default-pic.jpg?Signature=P7cCZpYOlnzr7asOEjVyqHzGIgw%3D&Expires=1403269018&AWSAccessKeyId=AKIAITNBWFV6BZDWPZMQ' denied.
storages/backends/s3boto.py:341 _normalize_name
storages/backends/s3boto.py:458 url
django/contrib/staticfiles/templatetags/staticfiles.py:12 url
django/templatetags/static.py:106 render
django/template/defaulttags.py:196 render
django/template/debug.py:78 render_node
django/template/base.py:840 render
django/template/loader_tags.py:62 render
django/template/debug.py:78 render_node
django/template/base.py:840 render
django/template/base.py:134 _render
django/template/loader_tags.py:123 render
django/template/debug.py:78 render_node
django/template/base.py:840 render
django/template/base.py:134 _render
django/template/base.py:140 render
django/template/loader.py:169 render_to_string
django/shortcuts/__init__.py:29 render_to_response
jobSearch/views.py:177 results
django/core/handlers/base.py:114 get_response

```

Their seems to be a SuspiciousOperation Exception when accessing `https:/reginaemploi.s3.amazonaws.com/static/images/company-logo/default-pic.jpg`
which is weird because the same link was working outside of Django, when I pasted it in my browser.
I read on that [link](http://timmyomahony.com/blog/suspiciousoperation-invalid-http-host-header-django/) that underscore ("\_") might cause some problems so I eliminated all underscores from my access path. ( this is the second time I get this exception, before that I had a folder named `"company_logo"`

Can you tell me what the problem is?