problem appear:
Traceback (most recent call last): File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 31, in <module> from pysqlite2 import dbapi2 as Database ModuleNotFoundError: No module named 'pysqlite2' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 33, in <module> from sqlite3 import dbapi2 as Database File "/usr/local/lib/python3.6/sqlite3/__init__.py", line 23, in <module> from sqlite3.dbapi2 import * File "/usr/local/lib/python3.6/sqlite3/dbapi2.py", line 27, in <module> from _sqlite3 import * ModuleNotFoundError: No module named '_sqlite3' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line utility.execute() File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/core/management/__init__.py", line 312, in execute django.setup() File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/__init__.py", line 18, in setup apps.populate(settings.INSTALLED_APPS) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/apps/registry.py", line 108, in populate app_config.import_models(all_models) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models self.models_module = import_module(models_module_name) File "/home/python/.virtualenvs/django/lib/python3.6/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 994, in _gcd_import File "<frozen importlib._bootstrap>", line 971, in _find_and_load File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 665, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 678, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/contrib/auth/models.py", line 41, in <module> class Permission(models.Model): File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/models/base.py", line 139, in __new__ new_class.add_to_class('_meta', Options(meta, **kwargs)) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/models/base.py", line 324, in add_to_class value.contribute_to_class(cls, name) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/models/options.py", line 250, in contribute_to_class self.db_table = truncate_name(self.db_table, connection.ops.max_name_length()) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/__init__.py", line 36, in __getattr__ return getattr(connections[DEFAULT_DB_ALIAS], item) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/utils.py", line 240, in __getitem__ backend = load_backend(db['ENGINE']) File "/home/python/.virtualenvs/django/lib/python3.6/site-packages/django/db/utils.py", line 111, in load_backend return import_module('%s.base' % backend_name) File "/home/python/.virtualenvs/django/lib/python3.6/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 994, in _gcd_import File "<frozen importlib._bootstrap>", line 971, in _find_and_load
the reason:
Django python version and the version used is not suitable.