Conda: Cannot import config parser while launching jupyter notebook

[ItsAnkit]

While i am trying to launch jupyter notebook, my command shell is showing following error :
hduser@ubuntu:~$ jupyter notebook
[I 03:49:08.691 NotebookApp] [nb_conda_kernels] enabled, 3 kernels found
[I 03:49:12.544 NotebookApp] [nb_anacondacloud] enabled
[I 03:49:12.586 NotebookApp] [nb_conda] enabled
[W 03:49:12.613 NotebookApp] Error loading server extension nbpresent
Traceback (most recent call last):
File "/opt/anaconda2/lib/python2.7/site-packages/notebook/notebookapp.py", line 1117, in init_server_extensions
mod = importlib.import_module(modulename)
File "/opt/anaconda2/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/opt6/anaconda2/lib/python2.7/site-packages/nbpresent/__init__.py", line 5, in
from nbconvert.exporters.export import exporter_map
File "/opt/anaconda2/lib/python2.7/site-packages/nbconvert/__init__.py", line 4, in
from .exporters import *
File "/opt/anaconda2/lib/python2.7/site-packages/nbconvert/exporters/__init__.py", line 1, in
from .base import (export, get_exporter,
File "/opt/anaconda2/lib/python2.7/site-packages/nbconvert/exporters/base.py", line 8, in
import entrypoints
File "/opt/anaconda2/lib/python2.7/site-packages/entrypoints.py", line 16, in
from backports import configparser
ImportError: cannot import name configparser
[I 03:49:12.692 NotebookApp] Serving notebooks from local directory: /home/hduser
[I 03:49:12.692 NotebookApp] 0 active kernels
[I 03:49:12.693 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/?token=5b559f4a7694f8004e6846198b1094e99e04327e3339

Apart from this, When i am trying to run my code, it's shoiwng Py4JavaError....

[jmshi]

I have the similar error:

jupyter-notebook

[I 16:07:38.705 NotebookApp] [nb_conda_kernels] enabled, 2 kernels found
[I 16:07:39.270 NotebookApp] [nb_anacondacloud] enabled
[I 16:07:39.272 NotebookApp] [nb_conda] enabled
[W 16:07:39.273 NotebookApp] Error loading server extension nbpresent
Traceback (most recent call last):
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/site-packages/notebook/notebookapp.py", line 1117, in init_server_extensions
mod = importlib.import_module(modulename)
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/site-packages/nbpresent/__init__.py", line 5, in
from nbconvert.exporters.export import exporter_map
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/site-packages/nbconvert/__init__.py", line 4, in
from .exporters import *
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/site-packages/nbconvert/exporters/__init__.py", line 1, in
from .base import (export, get_exporter,
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/site-packages/nbconvert/exporters/base.py", line 8, in
import entrypoints
File "/home/jmshi/local/anaconda/anaconda2/lib/python2.7/site-packages/entrypoints.py", line 16, in
from backports import configparser
ImportError: cannot import name configparser

[jmshi]

this solves my problem:
conda install configparser=3.5.0b2

which switches configparser 3.5.0-py27_0 --> 3.5.0b2-py27_1

[ItsAnkit]

Thanks, it worked....