Here's the traceback formatted:

mod_wsgi (pid=18330): Exception occurred processing WSGI script '/var/www/progit.wsgi'., referer: http://209.132.184.222/fork/ralph/progit
Traceback (most recent call last):, referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__, referer: http://209.132.184.222/fork/ralph/progit
    return self.wsgi_app(environ, start_response), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app, referer: http://209.132.184.222/fork/ralph/progit
    response = self.make_response(self.handle_exception(e)), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception, referer: http://209.132.184.222/fork/ralph/progit
    reraise(exc_type, exc_value, tb), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app, referer: http://209.132.184.222/fork/ralph/progit
    response = self.full_dispatch_request(), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request, referer: http://209.132.184.222/fork/ralph/progit
    rv = self.handle_user_exception(e), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception, referer: http://209.132.184.222/fork/ralph/progit
    reraise(exc_type, exc_value, tb), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request, referer: http://209.132.184.222/fork/ralph/progit
    rv = self.dispatch_request(), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request, referer: http://209.132.184.222/fork/ralph/progit
    return self.view_functions[rule.endpoint](**req.view_args), referer: http://209.132.184.222/fork/ralph/progit
  File "/srv/progit/progit/__init__.py", line 187, in decorated_function, referer: http://209.132.184.222/fork/ralph/progit
    return function(*args, **kwargs), referer: http://209.132.184.222/fork/ralph/progit
  File "/srv/progit/progit/ui/fork.py", line 629, in new_request_pull, referer: http://209.132.184.222/fork/ralph/progit
    branchname=branchname,, referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/templating.py", line 128, in render_template, referer: http://209.132.184.222/fork/ralph/progit
    context, ctx.app), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/templating.py", line 110, in _render, referer: http://209.132.184.222/fork/ralph/progit
    rv = template.render(context), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/jinja2/environment.py", line 969, in render, referer: http://209.132.184.222/fork/ralph/progit
    return self.environment.handle_exception(exc_info, True), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/jinja2/environment.py", line 742, in handle_exception, referer: http://209.132.184.222/fork/ralph/progit
    reraise(exc_type, exc_value, tb), referer: http://209.132.184.222/fork/ralph/progit
  File "/srv/progit/progit/templates/pull_request.html", line 2, in top-level template code, referer: http://209.132.184.222/fork/ralph/progit
    {% from "_formhelper.html" import render_field_in_row %}, referer: http://209.132.184.222/fork/ralph/progit
  File "/srv/progit/progit/templates/repo_master.html", line 1, in top-level template code, referer: http://209.132.184.222/fork/ralph/progit
    {% extends "master.html" %}, referer: http://209.132.184.222/fork/ralph/progit
  File "/srv/progit/progit/templates/master.html", line 85, in top-level template code, referer: http://209.132.184.222/fork/ralph/progit
    {% block jscripts %}, referer: http://209.132.184.222/fork/ralph/progit
  File "/srv/progit/progit/templates/pull_request.html", line 268, in block "jscripts", referer: http://209.132.184.222/fork/ralph/progit
    var url = "{{ url_for(, referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/flask/helpers.py", line 305, in url_for, referer: http://209.132.184.222/fork/ralph/progit
    force_external=external), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/werkzeug/routing.py", line 1618, in build, referer: http://209.132.184.222/fork/ralph/progit
    rv = self._partial_build(endpoint, values, method, append_unknown), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/werkzeug/routing.py", line 1542, in _partial_build, referer: http://209.132.184.222/fork/ralph/progit
    append_unknown), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/werkzeug/routing.py", line 1550, in _partial_build, referer: http://209.132.184.222/fork/ralph/progit
    rv = rule.build(values, append_unknown), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/werkzeug/routing.py", line 719, in build, referer: http://209.132.184.222/fork/ralph/progit
    add(self._converters[data].to_url(values[data])), referer: http://209.132.184.222/fork/ralph/progit
  File "/usr/lib/python2.7/site-packages/werkzeug/routing.py", line 931, in to_url, referer: http://209.132.184.222/fork/ralph/progit
    value = self.num_convert(value), referer: http://209.132.184.222/fork/ralph/progit
UndefinedError: 'requestid' is undefined, referer: http://209.132.184.222/fork/ralph/progit

Commit 07f5d34 fixes this ticket

This is fixed but not deployed as it will require a change in the DB which I'll have to do manually.

I'll to deploy it on Monday (earlier if I can but no promise)

Updated, feel free to re-try submitting the pull-request :-)