Error on eos studio - cp:missing file operand

I’m getting the following error when trying to run a simple cardgame project which has the cardgame.cpp and a blank gameplay.cpp file:

> docker run --rm --name eosio.cdt_v1.6.1 --volume /d/Code/EOS/cardgame:/project -w /project eostudio/eosio.cdt:v1.6.1 /bin/bash -c "ls -A | grep -v node_modules | xargs cp -r -t /tmp && cd /tmp && eosio-cpp -abigen -I include -contract cardgame -o cardgame.wasm src/cardgame.cpp && mv *.wasm /project && mv *.abi /project"
**cp: missing file operand**
Try 'cp --help' for more information

…any help to fix this please?

I have encountered the same problem when i try to bulid a simplest helloworld project, can you please tell me how to solve this problem? Thanks!