I would be glad if someone could help

It looks like your prisma instance could not connect to a postgres server. Did you forget to add the "postgres" service in docker-compose.yml ?

If the postgres is running on your host machine, use

host.docker.internal

as the postgres host instead of localhost if you have docker >=

18.03

. JS logs are rarely helpful here, consider looking into the docker logs of the Prisma container to find relevant info to post.