roon restore from backup fail to launch

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
00:00:00.001 Warn: get lock file path: /tmp/.rnsgem0-
00:00:00.042 Trace: [childprocess] using unix child process
Initializing
Started
aac_fixed decoder found, checking libavcodec version...

has mp3float: 1, aac_fixed: 0
Running
/app/RoonServer/Server/RoonServer: line 56: ps: command not found
00:00:00.002 Warn: get lock file path: /tmp/.rnsgem0-
00:00:00.091 Trace: [childprocess] using unix child process
Initializing
Started
/app/RoonServer/start.sh: line 50: /app/RoonServer/Server/RoonServer: Permission denied
/app/RoonServer/start.sh: line 34: kill: (396) - No such process