Successful installing in virtual environment but could not start jupyter.

[Minhring]

I created a virtual environment "tabnine" with python 3.8.5 in my Ubuntu 16.04 (python3.8 -m venv tabnine).
Then, I followed 4 steps in README to install (If i used --user in the first line, it could not run):
(tabnine) pip3 install jupyter-tabnine
(tabnine) jupyter nbextension install --py jupyter_tabnine --user
(tabnine) jupyter nbextension enable --py jupyter_tabnine --user
(tabnine) jupyter serverextension enable --py jupyter_tabnine --user
Everthing was fine, but when I tried to start jupyter:
(tabnine) jupyter notebook
It returned some errors:
...
File "/usr/local/lib/python3.8/sqlite3/dbapi2.py", line 27, in
from _sqlite3 import *
ModuleNotFoundError: No module named '_sqlite3'
During handling of the above exception, another exception occurred:
...
File "/home/minh/tabnine/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 12, in
from pysqlite2 import dbapi2 as sqlite3
ModuleNotFoundError: No module named 'pysqlite2'

Are there any suggestions for me Thanks all!