Traceback (most recent call last):


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/app.py", line 62, in application

response = frappe.handler.handle()


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/handler.py", line 22, in handle

data = execute_cmd(cmd)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/handler.py", line 53, in execute_cmd

return frappe.call(method, **frappe.form_dict)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/__init__.py", line 942, in call

return fn(*args, **newargs)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/core/doctype/user/user.py", line 783, in sign_up

user.insert()


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/model/document.py", line 249, in insert

self.run_post_save_methods()


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/model/document.py", line 898, in run_post_save_methods

self.run_method("on_update")


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/model/document.py", line 765, in run_method

out = Document.hook(fn)(self, *args, **kwargs)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/model/document.py", line 1040, in composer

return composed(self, method, *args, **kwargs)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/model/document.py", line 1023, in runner

add_to_return_value(self, fn(self, *args, **kwargs))


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/model/document.py", line 759, in <lambda>

fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/core/doctype/user/user.py", line 95, in on_update

self.send_password_notification(self.__new_password)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/core/doctype/user/user.py", line 204, in send_password_notification

self.send_welcome_mail_to_user()


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/core/doctype/user/user.py", line 273, in send_welcome_mail_to_user

site_url=get_url(),


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/core/doctype/user/user.py", line 302, in send_login_mail

delayed=(not now) if now!=None else self.flags.delay_emails, retry=3)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/__init__.py", line 440, in sendmail

inline_images=inline_images, header=header, print_letterhead=print_letterhead)


 "/home/ubuntu/frappe-bench/apps/frappe/frappe/email/queue.py", line 72, in send

sender = email_account.default_sender
AttributeError: 'NoneType' object has no attribute 'default_sender'

[autoreload of pandas.core.sparse.series failed: Traceback (most recent call last):


 "/Users/sentient-asoellinger/miniconda2/envs/ipykernel_py3/lib/python3.6/site-packages/IPython/extensions/autoreload.py", line 246, in check

superreload(m, reload, self.old_objects)


 "/Users/sentient-asoellinger/miniconda2/envs/ipykernel_py3/lib/python3.6/site-packages/IPython/extensions/autoreload.py", line 369, in superreload

module = reload(module)


 "/Users/sentient-asoellinger/miniconda2/envs/ipykernel_py3/lib/python3.6/imp.py", line 315, in reload

return importlib.reload(module)


 "/Users/sentient-asoellinger/miniconda2/envs/ipykernel_py3/lib/python3.6/importlib/__init__.py", line 166, in reload

_bootstrap._exec(spec, module)


 "<frozen importlib._bootstrap>", line 618, in _exec


 "<frozen importlib._bootstrap_external>", line 678, in exec_module


 "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed


 "/Users/sentient-asoellinger/miniconda2/envs/ipykernel_py3/lib/python3.6/site-packages/pandas/core/sparse/series.py", line 18, in <module>

import pandas.core.common as com
AttributeError: module 'pandas.core' has no attribute 'common'
