Its broken, The fix is here

Find this

private static void ClosePlayerInventory(BasePlayer player)
{
player.ClientRPCPlayer(null, player, "OnRespawnInformation");
}

Replace with

private static void ClosePlayerInventory(BasePlayer player)
{
player.ClientRPC(RpcTarget.Player("OnRespawnInformation", player));
}

Find this

player.ClientRPCPlayer(null, player, "RPC_OpenLootPanel", entitySource.panelName);

Replace with

player.ClientRPC(RpcTarget.Player("RPC_OpenLootPanel", player, entitySource.panelName));

Find this

write.BytesWithSize(_bytes, byteCount);

Replace with

write.BytesWithSize(new MemoryStream(_bytes, 0, byteCount));

Ur welvam

New to editing plugins. I downloaded this plugin from a fresh start and it did not locate the lines you said to find 

Find this

private static void ClosePlayerInventory(BasePlayer player)
{
player.ClientRPCPlayer(null, player, "OnRespawnInformation");
}

Find this

player.ClientRPCPlayer(null, player, "RPC_OpenLootPanel", entitySource.panelName);

Find this

write.BytesWithSize(_bytes, byteCount);

None of these are present in the plugin downloaded from umod

uh yeah I may have been on a drunk tangent last night an may have posted the wrong code to the wrong plugin; my bad