I am trying to dockerize two applications, one being streamlit, the other being fastapi, I have built the individual docker images for them, and now trying to run them at the same time so they communicate using docker-compose. I have written the code but get an error when i run docker-compose up --build, that says ERROR: Service "backend" uses an undefined network "AIservice" because of this part of the code networks: AIservice: aliases: - backend.docker
how do i fix this error