buildx failed with: ERROR: failed to solve: process "/bin/sh -c git clone https://github.com/lm-sys/FastChat.git && cd FastChat && python3.9 -m pip install -e \".[model_worker]\" -i ${PYTHON_INDEX_URL} && git rev-parse HEAD > $HOME/.fastchat && cd .. && rm -rf FastChat" did not complete successfully: exit code: 1