MathTexEngine Warning

I am developing a package for my own research and started getting this weird warning when it pre-compiles. I’m not sure what is causing it or how to fix it. For reference, I have TexLive 2020 installed on my system.

The package dependencies are:

CairoMakie
CoolProp
Debugger
FFTW
Infiltrator
LinearAlgebra
LocalRegistry
StaticArrays 
TestEnv

The error is

┌ Warning: unknown command \Join
└ @ MathTeXEngine ~/.julia/packages/MathTeXEngine/ZP0gS/src/parser/commands_registration.jl:48

Any ideas on how to make this go away?

I believe that this is fixed - Warning: unknown command \Join · Issue #60 · Kolaru/MathTeXEngine.jl · GitHub - but a new release hasn’t yet been made.