Admin commands using DAKGetLevelSufficient raise a Script Error

The sv_switchteam, sv_kick, sv_slay, and sv_eject commands do not work on B235 servers. Using any of these commands returns the following stack trace:

[Server] Script Error #1: lua/DAKLoader_ServerAdmin.lua:143: None of the overloads for Server.GetOwner match the supplied arguments:
  Server.GetOwner(ServerClient)
Overloads:
  Server.GetOwner(Entity player)
    Call stack:
    #1: GetOwner [C]:-1
    #2: GetObjectLevel lua/DAKLoader_ServerAdmin.lua:143
        target = ServerClient { }
    #3: DAKGetLevelSufficient lua/DAKLoader_ServerAdmin.lua:154
        client = ServerClient { }
        targetclient = "6"
    #4: lua/plugins/plugin_baseadmincommands.lua:249
        client = ServerClient { }
        playerId = "6"