----- What steps will reproduce the problem?
When casting a spell (like divine hymn), got the following error. Not happened on other spells.

----- What version of the product are you using?
InlineAura from Github
Elvui 3.15

----- Do you have an error log of what happened?
1x InlineAura-@project-version@\Display.lua:201 ERROR: <unnamed>:SetFont(): invalid fontHeight: 6.7467546216449e-008, height must be > 0
InlineAura-@project-version@\Display.lua:201 in function `UpdateFont'
InlineAura-@project-version@\Display.lua:232 in function `OnUpdate'
InlineAura-@project-version@\Display.lua:220 in function <InlineAura\Display.lua:213
(tail call): ?:
InlineAura-@project-version@\Display.lua:376 in function `ShowCountdownAndStack'
InlineAura-@project-version@\Core.lua:670 in function <InlineAura\Core.lua:617
InlineAura-@project-version@\Core.lua:871 in function <InlineAura\Core.lua:858
InlineAura-@project-version@\Core.lua:896 in function `OnUpdate'
InlineAura-@project-version@\Core.lua:1355 in function <InlineAura\Core.lua:1352

----- Please provide any additional information below.
For some reason, somtimes the variable overflowRatio is equal to 7000+ so the division with fontSize is very small (something like 1e-04) and cause error.
I fix error with the following code waiting you can have a look :
function countdownProto:UpdateFont()
    local fontSize, r, g, b = self:getFontSize()
    self:SetTextColor(r, g, b)
    self:SetFont(self.font fontSize, self.fontFlag
    local overflowRatio = self:GetStringWidth() / (self:GetParent():GetWidth()-4)
    if overflowRatio > 1 then
        if fontSize / overflowRatio > 1 then
            return self:SetFont(self.font fontSize / overflowRatio, self.fontFlag
        end
    end
end