Traceback (most recent call last):


 "/usr/local/lib/python3.7/site-packages/traitlets/traitlets.py", line 528, in get

value = obj._trait_values[self.name]
KeyError: 'kernel_manager_class'

Traceback (most recent call last):


 "C:\Users\Gebruiker\Envs\rotkehlchen\lib\site-packages\flask\app.py", line 1949, in full_dispatch_request

rv = self.dispatch_request()


 "C:\Users\Gebruiker\Envs\rotkehlchen\lib\site-packages\flask\app.py", line 1935, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)


 "C:\Users\Gebruiker\Envs\rotkehlchen\lib\site-packages\flask_restful\__init__.py", line 458, in wrapper

resp = resource(*args, **kwargs)


 "C:\Users\Gebruiker\Envs\rotkehlchen\lib\site-packages\flask\views.py", line 89, in view

return self.dispatch_request(*args, **kwargs)


 "C:\Users\Gebruiker\Envs\rotkehlchen\lib\site-packages\flask_restful\__init__.py", line 573, in dispatch_request

resp = meth(*args, **kwargs)


 "C:\Users\Gebruiker\Envs\rotkehlchen\lib\site-packages\webargs\core.py", line 366, in wrapper

return func(*args, **kwargs)


 "C:\Users\Gebruiker\Source\Repos\rotki\rotkehlchen\api\v1\resources.py", line 302, in get

ignore_cache=ignore_cache,


 "C:\Users\Gebruiker\Source\Repos\rotki\rotkehlchen\api\rest.py", line 101, in wrapper

return f(wrappingobj, *args, **kwargs)


 "C:\Users\Gebruiker\Source\Repos\rotki\rotkehlchen\api\rest.py", line 575, in query_blockchain_balances

ignore_cache=ignore_cache,


 "C:\Users\Gebruiker\Source\Repos\rotki\rotkehlchen\api\rest.py", line 553, in _query_blockchain_balances

per_account = {'BTC': result['per_account']['BTC']}
KeyError: 'BTC'
