Maximum recursion RuntimeError raised after running for a while

[StoneMoe]

Traceback (most recent call last):
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 2309, in __call__
return self.wsgi_app(environ, start_response)
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 2295, in wsgi_app
response = self.handle_exception(e)
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 1741, in handle_exception
reraise(exc_type, exc_value, tb)
File "/project/venv/lib/python3.4/site-packages/flask/_compat.py", line 35, in reraise
raise value
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/project/venv/lib/python3.4/site-packages/flask/_compat.py", line 35, in reraise
raise value
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 1811, in full_dispatch_request
rv = self.preprocess_request()
File "/project/venv/lib/python3.4/site-packages/flask/app.py", line 2087, in preprocess_request
rv = func()
File "/project/venv/lib/python3.4/site-packages/flask_debugtoolbar/__init__.py", line 154, in process_request
panel.process_request(real_request)
File "/project/venv/lib/python3.4/site-packages/flask_debug_api/panels.py", line 46, in process_request
self.variables[r.rule] = self.url_builder(r)
File "/project/venv/lib/python3.4/site-packages/flask_debug_api/panels.py", line 64, in url_builder
'url_for': url_for
File "/project/venv/lib/python3.4/site-packages/flask_debugtoolbar/panels/__init__.py", line 29, in render
template = self.jinja_env.get_template(template_name)
File "/project/venv/lib/python3.4/site-packages/jinja2/environment.py", line 830, in get_template
return self._load_template(name, self.make_globals(globals))
File "/project/venv/lib/python3.4/site-packages/jinja2/environment.py", line 804, in _load_template
template = self.loader.load(self, name, globals)
File "/project/venv/lib/python3.4/site-packages/jinja2/loaders.py", line 405, in load
return loader.load(environment, name, globals)
File "/project/venv/lib/python3.4/site-packages/jinja2/loaders.py", line 405, in load
return loader.load(environment, name, globals)
File "/project/venv/lib/python3.4/site-packages/jinja2/loaders.py", line 405, in load
return loader.load(environment, name, globals)
File "/project/venv/lib/python3.4/site-packages/jinja2/loaders.py", line 405, in load
return loader.load(environment, name, globals)
File "/project/venv/lib/python3.4/site-packages/jinja2/loaders.py", line 405, in load
return loader.load(environment, name, globals)
File "/project/venv/lib/python3.4/site-packages/jinja2/loaders.py", line 405, in load
.........Many same output.........
RuntimeError: maximum recursion depth exceeded