ValueError: need more than 1 value to unpack

[anonymous]

How to Reproduce

While doing a GET operation on , Trac issued an internal error.

(please provide additional details here)

Request parameters:

{}

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:20.0) Gecko/20100101 Firefox/20.0

System Information

System information not available

Enabled Plugins

Plugin information not available

Python Traceback

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 522, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 208, in dispatch
    chosen_handler)
  File "/usr/lib/python2.7/dist-packages/trac/web/main.py", line 350, in _pre_process_request
    chosen_handler = filter_.pre_process_request(req, chosen_handler)
  File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/api.py", line 330, in pre_process_request
    repo = self.get_repository(reponame)
  File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/api.py", line 515, in get_repository
    repoinfo = self.get_all_repositories().get(reponame, {})
  File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/api.py", line 583, in get_all_repositories
    for reponame, info in provider.get_repositories() or []:
  File "/usr/lib/python2.7/dist-packages/trac/versioncontrol/api.py", line 112, in get_repositories
    db = self.env.get_db_cnx()
  File "/usr/lib/python2.7/dist-packages/trac/env.py", line 329, in get_db_cnx
    return get_read_db(self)
  File "/usr/lib/python2.7/dist-packages/trac/db/api.py", line 91, in get_read_db
    or DatabaseManager(env).get_connection())
  File "/usr/lib/python2.7/dist-packages/trac/db/api.py", line 152, in get_connection
    connector, args = self.get_connector()
  File "/usr/lib/python2.7/dist-packages/trac/db/api.py", line 185, in get_connector
    scheme, args = _parse_db_str(self.connection_uri)
  File "/usr/lib/python2.7/dist-packages/trac/db/api.py", line 221, in _parse_db_str
    scheme, rest = db_str.split(':', 1)
ValueError: need more than 1 value to unpack