suppress error

scripts/services/Mistborn-base.service

@@ -16,7 +16,7 @@ EnvironmentFile=/opt/mistborn/.env
 ExecStartPre=/usr/local/bin/docker-compose -f /opt/mistborn/base.yml down
 
 # stop all containers joined to mistborn_default network
-ExecStartPre=-/usr/bin/bash -c "docker container stop $(docker network inspect mistborn_default | grep Name | tail -n +2 | cut -d':' -f2 | tr -d ',\"')"
+ExecStartPre=-/usr/bin/bash -c "docker container stop $(docker network inspect mistborn_default | grep Name | tail -n +2 | cut -d':' -f2 | tr -d ',\"') 2>/dev/null"
 
 ExecStartPre=/usr/local/bin/docker-compose -f /opt/mistborn/base.yml build
 ExecStartPre=-/sbin/ip address add 10.2.3.1/30 dev DIFACE