A problem while deploying a docker network with version 1.1 #reposting


I am a master student currently working on a project about DLTs. I was very interested in sawtooth and so decided to include it in the project.
While I was trying to deploy a small network of sawtooth version 1.1 using docker, I kept randomly getting a warning in the validator and an error in the PoET engine. 
I would like to know if this is normal or not and how to fix it. This deployment was made with the docker-compose provided in the official repo.
I want to precise that I tried the step specified in the Q&A and it had normal connectivity.