So did some more digging with debugging enabled and it looks like a permission issue. "**" is the superadmin user and should have permission for all the plugins, unless its a file/folder permission in Linux. Any ideas what I should check?
[11:50:50] [RemoteAMPAuth:Anonymous Activity] : Authentication attempt for user **** from 127.0.0.1
[11:50:50] [RemoteAMPAuth:Anonymous Debug] : Logging in via remote auth server http://localhost:8080/...
[11:50:51] [RemoteAMPAuth:Anonymous Activity] : Authentication success
[11:50:55] [FileBackup:Amper Activity] : Creating Backup:
[11:50:55] [FileBackup:Amper Debug] : Building file list...
[11:50:55] [APIService:Amper Warning] : Returned exception from API call LocalFileBackupPlugin/TakeBackup
[11:50:55] [Core:Amper Error] : IOException
[11:50:55] [Core:Amper Error] :  (IOException) : Permission denied
[11:51:00] [Core Debug] : Exception posting server metrics.
[11:51:00] [Core Error] : SocketException
[11:51:00] [Core Error] :  (SocketException) : Connection refused
[11:51:00] [Core Error] : at Net.Sockets.Socket.Send (Byte buffer, Int32 offset, Int32 size, Net.Sockets.SocketFlags socketFlags)
at Net.Sockets.UdpClient.Send (Byte dgram, Int32 bytes)
at ModuleShared.MetricsInfoPublisher.ScheduleHandler (Object sender, EventArgs e)