[Kanegasi]

It looks like you used MoveAnything to move your Skada window, then uninstalled Skada or Skada changed. Now, MoveAnything is trying to mess with a frame that no longer exists or doesn't exist by that name.

With WoW not running (completely exit), open the file World of Warcraft\WTF\Account\<accountID>\SavedVariables\MoveAnything.lua in a text editor, search for SkadaBarWindowTotals, then delete that section. It will look similar to this:

MAKE A COPY OF THIS FILE BEFORE YOU EDIT IT

["SkadaBarWindowTotals"] = {
    ["orgScale"] = 1,
    ["disableLayerBackground"] = true,
    ["name"] = "SkadaBarWindowTotals",
    ["orgPos"] = {
        "BOTTOM", -- [1]
        "UIParent", -- [2]
        "BOTTOM", -- [3]
        0, -- [4]
        229.000015258789, -- [5]
    },
    ["scale"] = 0.699999988079071,
    ["disableLayerArtwork"] = true,
    ["disableLayerBorder"] = true,
    ["pos"] = {
        "TOP", -- [1]
        "ExtraActionButton1", -- [2]
        "BOTTOM", -- [3]
        0, -- [4]
        -24.9999923706055, -- [5]
    },
},

Delete just that section, from the top line in the example above to the }, right before the next named frame.