I started facing this error after installing keras via - conda install -c conda-forge keras.
Now when I try to launch Jupiter notebook I am prompted with the following:
Traceback (most recent call last):
File "C:\Users\srish\Anaconda3\lib\site-packages\jsonschema\__init__.py", line 31, in <module>
from importlib import metadata
ImportError: cannot import name 'metadata' from 'importlib' (C:\Users\srish\Anaconda3\lib\importlib\__init__.py)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\srish\Anaconda3\lib\site-packages\nbformat\validator.py", line 12, in <module>
from jsonschema import ValidationError
File "C:\Users\srish\Anaconda3\lib\site-packages\jsonschema\__init__.py", line 33, in <module>
import importlib_metadata as metadata
ModuleNotFoundError: No module named 'importlib_metadata'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\srish\Anaconda3\Scripts\jupyter-notebook-script.py", line 6, in <module>
from notebook.notebookapp import main
File "C:\Users\srish\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 80, in <module>
from .services.contents.manager import ContentsManager
File "C:\Users\srish\Anaconda3\lib\site-packages\notebook\services\contents\manager.py", line 17, in <module>
from nbformat import sign, validate as validate_nb, ValidationError
File "C:\Users\srish\Anaconda3\lib\site-packages\nbformat\__init__.py", line 32, in <module>
from .validator import validate, ValidationError
File "C:\Users\srish\Anaconda3\lib\site-packages\nbformat\validator.py", line 23, in <module>
raise ImportError(str(e) + verbose_msg)
ImportError: No module named 'importlib_metadata'
Jupyter notebook format depends on the jsonschema package:
https://pypi.python.org/pypi/jsonschema
Please install it first.
The solution of the following link seems to be outdated, and is for python 2.7 only: Can't use Jupyter Notebook: jsonschema apparently missing.