Error: 500 Internal Server Error

Sorry, the requested URL 'http://s.tartaglialab.com/implement_example/401524/93686' caused an error:

Internal Server Error

Exception:

ValueError('Extra data: line 1 column 2561 - line 1 column 18446 (char 2560 - 18445)',)

Traceback:

Traceback (most recent call last):
  File "/app/bottle.py", line 763, in _handle
    return route.call(**args)
  File "/app/bottle.py", line 1572, in wrapper
    rv = callback(*a, **ka)
  File "main.py", line 1195, in implement_example
    item_form = json.loads(restore_long_attr(item, "submitted_form"))
  File "/usr/local/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/local/lib/python2.7/json/decoder.py", line 367, in decode
    raise ValueError(errmsg("Extra data", s, end, len(s)))
ValueError: Extra data: line 1 column 2561 - line 1 column 18446 (char 2560 - 18445)