-- pokud mam aktivni virtualni prostredi
source langflow_env/bin/activate
langflow run

-- nova instalace
python3.10
python3.10 -m venv langflow_env
source langflow_env/bin/activate
-- REQUIREMENT SOUBOR IGNOROVAT
1- install uv with pip. " pip install uv".
2- run "uv pip install langflow"
3- run " langflow run".
-- pokud error astraDB tak 
pip install langchain-astradb==0.5.2


ziskani textu ze souboru
pip install openai


https://github.com/langflow-ai/langflow/issues/4913