Message: Interface\AddOns\WeakAuras\BuffTrigger2.lua:369: attempt to perform arithmetic on field 'stacks' (a nil value)
Time: Wed Apr 15 07:21:18 2020
Count: 2344
Stack: Interface\AddOns\WeakAuras\BuffTrigger2.lua:369: attempt to perform arithmetic on field 'stacks' (a nil value)
[C]: ?
Interface\AddOns\WeakAuras\BuffTrigger2.lua:369: in function <Interface\AddOns\WeakAuras\BuffTrigger2.lua:345>
Interface\AddOns\WeakAuras\BuffTrigger2.lua:977: in function <Interface\AddOns\WeakAuras\BuffTrigger2.lua:962>
Interface\AddOns\WeakAuras\BuffTrigger2.lua:1288: in function <Interface\AddOns\WeakAuras\BuffTrigger2.lua:1283>
Interface\AddOns\WeakAuras\BuffTrigger2.lua:1623: in function <Interface\AddOns\WeakAuras\BuffTrigger2.lua:1616>

Locals:

affected aura is:
{
["xOffset"] = 0,
["yOffset"] = 0,
["anchorPoint"] = "CENTER",
["cooldownSwipe"] = true,
["cooldownEdge"] = false,
["actions"] = {
["start"] = {
},
["init"] = {
},
["finish"] = {
},
},
["triggers"] = {
[1] = {
["trigger"] = {
["useMatch_count"] = true,
["type"] = "aura2",
["subeventSuffix"] = "_CAST_START",
["useName"] = true,
["ownOnly"] = true,
["event"] = "Health",
["subeventPrefix"] = "SPELL",
["auranames"] = {
[1] = "Banish",
},
["match_countOperator"] = ">",
["spellIds"] = {
},
["unit"] = "multi",
["match_count"] = "0",
["auraspellids"] = {
[1] = "17941",
},
["names"] = {
},
["debuffType"] = "HARMFUL",
},
["untrigger"] = {
},
},
["activeTriggerMode"] = -10,
},
["internalVersion"] = 28,
["keepAspectRatio"] = false,
["selfPoint"] = "CENTER",
["desaturate"] = false,
["subRegions"] = {
[1] = {
["text_shadowXOffset"] = 0,
["type"] = "subtext",
["text_text"] = "%p",
["text_color"] = {
[1] = 1,
[2] = 1,
[3] = 1,
[4] = 1,
},
["text_font"] = "PT Sans Narrow Bold",
["text_shadowColor"] = {
[1] = 0,
[2] = 0,
[3] = 0,
[4] = 1,
},
["text_shadowYOffset"] = 0,
["text_selfPoint"] = "AUTO",
["rotateText"] = "NONE",
["text_visible"] = true,
["text_anchorPoint"] = "OUTER_BOTTOM",
["anchorYOffset"] = 0,
["text_justify"] = "CENTER",
["text_fontSize"] = 12,
["anchorXOffset"] = 0,
["text_fontType"] = "OUTLINE",
},
},
["height"] = 35,
["load"] = {
["use_class"] = true,
["use_never"] = false,
["class"] = {
["single"] = "WARLOCK",
["multi"] = {
},
},
["spec"] = {
["multi"] = {
},
},
["size"] = {
["multi"] = {
},
},
},
["regionType"] = "icon",
["icon"] = true,
["cooldownTextDisabled"] = false,
["parent"] = "cc",
["displayIcon"] = 136135,
["zoom"] = 0,
["auto"] = false,
["frameStrata"] = 1,
["id"] = "banish",
["width"] = 35,
["alpha"] = 1,
["anchorFrameType"] = "SCREEN",
["uid"] = "ouHzxdKzjfR",
["config"] = {
},
["inverse"] = false,
["color"] = {
[1] = 1,
[2] = 1,
[3] = 1,
[4] = 1,
},
["conditions"] = {
},
["authorOptions"] = {
},
["animation"] = {
["start"] = {
["type"] = "none",
["duration_type"] = "seconds",
},
["main"] = {
["type"] = "none",
["duration_type"] = "seconds",
},
["finish"] = {
["type"] = "none",
["duration_type"] = "seconds",
},
},
}

This should be fixed if you update to the 2.17.0 that we just released.