error Sunday may 29th

Traceback (most recent call last):
File "C:\Xi\tuelz\core\webs.py", line 178, in do_GET
File "C:\Xi\tuelz\core\handlers.py", line 119, in handle
File "C:\Xi\tuelz\core\handlers.py", line 127, in traverse
File "./newz.mod/newz/newztuels.py", line 102, in default_action
File "./newz.mod/newz/newztuels.py", line 271, in publish_category
File "C:\Xi\tuelz\core\databases.py", line 152, in <lambda>
File "C:\Xi\tuelz\core\databases.py", line 51, in make_query
DatabaseError: cannot start a transaction within a transaction