1. after adding oxide in server this error showed up -

    Code:
    FileNotFoundException: Could not load Oxide root configuration
      at Oxide.Core.OxideMod.Load () [0x00000] in <filename unknown>:0
      at Oxide.Core.Interface.Initialize () [0x00000] in <filename unknown>:0
      at Bootstrap.Init_Tier0 () [0x00000] in <filename unknown>:0
      at Bootstrap+<Start>c__Iterator7.MoveNext () [0x00000] in <filename unknown>:0
    (Filename:  Line: -1)
     
  2. Check you've got oxide.root.json in the server directory. If you haven't, I'd recommend reinstalling Oxide as it's included in the archive.
     
  3. my bad, didnt see it. :D