ValueError: source code string cannot contain null bytes

[Barath-OERCREATOR]

ValueError: source code string cannot contain null bytes
Traceback:
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\streamlit\runtime\scriptrunner\script_runner.py", line 600, in run_script
exec(code, module.dict)
File "D:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\app.py", line 5, in
from langchain_google_genai import GoogleGenerativeAIEmbeddings
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\langchain_google_genai_init.py", line 58, in
from langchain_google_genai.enums import HarmBlockThreshold, HarmCategory
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\langchain_google_genai_enums.py", line 1, in
import google.ai.generativelanguage_v1beta as genai
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\google\ai\generativelanguage_v1bet
a_init.py", line 21, in
from .services.discuss_service import DiscussServiceAsyncClient, DiscussServiceClient
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\google\ai\generativelanguage_v1beta\services\discuss_service_init_.py", line 16, in
from .async_client import DiscussServiceAsyncClient
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\google\ai\generativelanguage_v1beta\services\discuss_service\async_client.py", line 32, in
from google.api_core import exceptions as core_exceptions
File "d:\PROJECTS\artificial_intelligence_projects\MULTI_PDF_CHATBOT\venv\lib\site-packages\google\api_core\exceptions.py", line 32, in
import grpc

after the execution of streamlit run app.py i get this error can anyone say how to solve this error please