pydantic.errors.PydanticImportError (pydantic v2.1.1)

[ddofborg]

I got this pydantic.errors.PydanticImportError exception when started litexpore. Uninstalling 2.x.x version and installing v1.10.12 with pip install pydantic==1.10.12 worked.

Traceback (most recent call last):
  File "/venv/bin/litexplore", line 5, in <module>
    from litexplore import __main__
  File "/venv/lib/python3.8/site-packages/litexplore/__main__.py", line 23, in <module>
    uvicorn.run(
  File "/venv/lib/python3.8/site-packages/uvicorn/main.py", line 587, in run
    server.run()
  File "/venv/lib/python3.8/site-packages/uvicorn/server.py", line 61, in run
    return asyncio.run(self.serve(sockets=sockets))
  File "/usr/lib/python3.8/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "uvloop/loop.pyx", line 1517, in uvloop.loop.Loop.run_until_complete
  File "/venv/lib/python3.8/site-packages/uvicorn/server.py", line 68, in serve
    config.load()
  File "/venv/lib/python3.8/site-packages/uvicorn/config.py", line 467, in load
    self.loaded_app = import_from_string(self.app)
  File "/venv/lib/python3.8/site-packages/uvicorn/importer.py", line 21, in import_from_string
    module = importlib.import_module(module_str)
  File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/venv/lib/python3.8/site-packages/litexplore/app.py", line 27, in <module>
    from pydantic import (
  File "/venv/lib/python3.8/site-packages/pydantic/__init__.py", line 210, in __getattr__
    return _getattr_migration(attr_name)
  File "/venv/lib/python3.8/site-packages/pydantic/_migration.py", line 289, in wrapper
    raise PydanticImportError(
pydantic.errors.PydanticImportError: `BaseSettings` has been moved to the `pydantic-settings` package. See https://docs.pydantic.dev/2.1.1/migration/#basesettings-has-moved-to-pydantic-settings for more details.

For further information visit https://errors.pydantic.dev/2.1.1/u/import-error

[Samsam987]

You can fix that by replacing :

from pydantic import ...

by

from pydantic.v1 import ...

in the /venv/lib/python3.8/site-packages/litexplore/app.py file. Worked for me.