Some problem

When I run the code：
using LaserTag
using POMDPGifs
using QMDP
using Random
using ParticleFilters

rng = MersenneTwister(7)

m = gen_lasertag(rng=rng, robot_position_known=true)
policy = solve(QMDPSolver(verbose=true), m)
filter = SIRParticleFilter(m, 10000, rng=rng)

@show makegif(m, policy, filter, filename="out.gif", rng=rng)

I encountered this problem, and I can't solve it. Could you give me a hand?

!LuaTeX error (file C:/CTEX/CTeX/fonts/sfd/Unicode.sfd): invalid range:
_0xFFFF

==> Fatal error occurred, no output PDF file produced!

ERROR: LoadError: LaTeX error
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] (::TikzPictures.var"#6#7"{TikzPictures.PDF,TikzPictures.TikzPicture,String})() at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\TikzPictures\QJ62d\src\TikzPictures.jl:264
[3] cd(::TikzPictures.var"#6#7"{TikzPictures.PDF,TikzPictures.TikzPicture,String}, ::String) at .\file.jl:93
[4] save(::TikzPictures.PDF, ::TikzPictures.TikzPicture) at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\TikzPictures\QJ62d\src\TikzPictures.jl:208
[5] show(::IOStream, ::MIME{Symbol("image/png")}, ::LaserTagVis) at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\LaserTag\rRla5\src\visualization.jl:29
[6] writeframe(::String, ::MIME{Symbol("image/png")}, ::LaserTagVis) at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\Reel\Mu9ck\src\Reel.jl:35
[7] push! at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\Reel\Mu9ck\src\Reel.jl:42 [inlined]
[8] macro expansion at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\POMDPGifs\NifU5\src\POMDPGifs.jl:120 [inlined]
[9] macro expansion at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\ProgressMeter\N86Uo\src\ProgressMeter.jl:732 [inlined]
[10] makegif(::LaserTagPOMDP{DESPOTEmu,StaticArrays.MArray{Tuple{8},Int64,1,8}}, ::POMDPSimulators.SimHistory{NamedTuple{(:s, :a, :sp, :o, :r, :t, :action_info, :b, :bp, :update_info),Tuple{LTState,Int64,LTState,StaticArrays.MArray{Tuple{8},Int64,1,8},Float64,Int64,Nothing,ParticleCollection{LTState},ParticleCollection{LTState},Nothing}}}; filename::String, spec::Nothing, show_progress::Bool, render_kwargs::NamedTuple{(),Tuple{}}, fps::Int64) at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\POMDPGifs\NifU5\src\POMDPGifs.jl:119
[11] simulate(::GifSimulator, ::LaserTagPOMDP{DESPOTEmu,StaticArrays.MArray{Tuple{8},Int64,1,8}}, ::POMDPPolicies.AlphaVectorPolicy{LaserTagPOMDP{DESPOTEmu,StaticArrays.MArray{Tuple{8},Int64,1,8}},Int64}, ::BasicParticleFilter{LaserTagPOMDP{DESPOTEmu,StaticArrays.MArray{Tuple{8},Int64,1,8}},LaserTagPOMDP{DESPOTEmu,StaticArrays.MArray{Tuple{8},Int64,1,8}},LowVarianceResampler,MersenneTwister,Array{LTState,1}}) at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\POMDPGifs\NifU5\src\POMDPGifs.jl:57
[12] #makegif#4 at C:\Users\pilgrim\.juliapro\JuliaPro_v1.4.2-1\packages\POMDPGifs\NifU5\src\POMDPGifs.jl:83 [inlined]
[13] top-level scope at show.jl:613
in expression starting at untitled-c1282b29e8afbf0a83499fea45c36a74:13

Start by reproducing the makegif call and inspect src/visualization.jl, where LaserTagVis reaches TikzPictures.save. Trace the related POMDPGifs.jl call path and the reported LuaTeX error; done means the example creates out.gif without the LaTeX failure.

Written by the indexing model from the issue text.