No module named 'langchain_community.chat_models.vertexai'

Here's how to solve this problem. Error:

(base) (ragas_rel) PS E:\code\python-project\ragas_rel> uv run python main.py
Traceback (most recent call last): File "E:\code\python-project\ragas_rel\main.py", line 5, in from ragas.llms import llm_factory File "E:\code\python-project\ragas_rel.venv\Lib\site-packages\ragas_init.py", line 5, in from ragas.evaluation import aevaluate, evaluate File "E:\code\python-project\ragas_rel.venv\Lib\site-packages\ragas\evaluation.py", line 31, in from ragas.llms import llm_factory File "E:\code\python-project\ragas_rel.venv\Lib\site-packages\ragas\llms_init.py", line 1, in from ragas.llms.base import ( File "E:\code\python-project\ragas_rel.venv\Lib\site-packages\ragas\llms\base.py", line 12, in from langchain_community.chat_models.vertexai import ChatVertexAI ModuleNotFoundError: No module named 'langchain_community.chat_models.vertexai'