trouble with my GR backend

[1256ABCDE]

Details

`using SingularSpectrumAnalysis, Plots

generate some data

L = 20 # Window length
K = 100
N = KL; # number of datapoints
t = 1:N; # Time vector
T = 20; # period of main oscillation
y = sin.(2pi/Tt); # Signal
y .+= (0.5sin.(2pi/T4t)).^2 # Add another frequency
e = 0.1randn(N); # Add some noise
yn = y+e;

plot(ys)

yt, ys = analyze(yn, L, robust=true) # trend and seasonal components
plot(yt, lab="Trend")`

I installed MarketData and some other Pkg, and my Plots didn't work. Why?Here is my error report:
could not load library “libGR.dll”

The specified module could not be found.

setcharheight(::Float64) at GR.jl:1395

gr_set_font(::Plots.Font, ::Plots.Subplot{Plots.GRBackend}; halign::Symbol, valign::Symbol, color::RGBA{Float64}, rotation::Int64) at gr.jl:386

(::Plots.var"#gr_set_font##kw")(::NamedTuple{(:halign, :valign, :rotation),Tuple{Symbol,Symbol,Int64}}, ::typeof(Plots.gr_set_font), ::Plots.Font, ::Plots.Subplot{Plots.GRBackend}) at gr.jl:385

gr_set_xticks_font(::Plots.Subplot{Plots.GRBackend}) at gr.jl:688

_update_min_padding!(::Plots.Subplot{Plots.GRBackend}) at gr.jl:900

iterate at generator.jl:47 [inlined]

_collect(::Array{AbstractLayout,2}, ::Base.Generator{Array{AbstractLayout,2},typeof(Plots._update_min_padding!)}, ::Base.EltypeUnknown, ::Base.HasShape{2}) at array.jl:678

collect_similar(::Array{AbstractLayout,2}, ::Base.Generator{Array{AbstractLayout,2},typeof(Plots._update_min_padding!)}) at array.jl:607

map(::Function, ::Array{AbstractLayout,2}) at abstractarray.jl:2072

_update_min_padding!(::Plots.GridLayout) at layouts.jl:310

prepare_output(::Plots.Plot{Plots.GRBackend}) at plot.jl:184

showjuno(::IOContext{Base.GenericIOBuffer{Array{UInt8,1}}}, ::MIME{Symbol(“image/svg+xml”)}, ::Plots.Plot{Plots.GRBackend}) at output.jl:258

show(::IOContext{Base.GenericIOBuffer{Array{UInt8,1}}}, ::MIME{Symbol(“image/svg+xml”)}, ::Plots.Plot{Plots.GRBackend}) at output.jl:212

show(::IOContext{Base.GenericIOBuffer{Array{UInt8,1}}}, ::String, ::Plots.Plot{Plots.GRBackend}) at multimedia.jl:109

displayinplotpane(::Plots.Plot{Plots.GRBackend}) at showdisplay.jl:67

displayandrender(::Plots.Plot{Plots.GRBackend}) at showdisplay.jl:131

(::Atom.var"#222#227")() at eval.jl:189

#invokelatest#1 at essentials.jl:712 [inlined]

invokelatest at essentials.jl:711 [inlined]

(::Atom.var"#220#225"{String,String})() at eval.jl:188

withpath(::Atom.var"#220#225"{String,String}, ::Nothing) at utils.jl:30

withpath(::Function, ::String) at eval.jl:9

#219 at eval.jl:171 [inlined]

with_logstate(::Atom.var"#219#224"{String,String}, ::Base.CoreLogging.LogState) at logging.jl:398

with_logger at logging.jl:505 [inlined]

#218 at eval.jl:170 [inlined]

hideprompt(::Atom.var"#218#223"{String,String}) at repl.jl:127

macro expansion at dynamic.jl:24 [inlined]

evalall(::String, ::Nothing, ::String) at eval.jl:160

invokelatest(::Any, ::Any, ::Vararg{Any,N} where N; kwargs::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}) at essentials.jl:712

invokelatest(::Any, ::Any, ::Vararg{Any,N} where N) at essentials.jl:711

macro expansion at eval.jl:41 [inlined]

(::Atom.var"#188#189")() at task.jl:358
There may be a problem with my “Plots” Pkg, how should we resolve it?thanks!

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)
pyplot
plotly
plotlyjs
pgfplotsx
inspectdr

Versions

Plots.jl version:
Backend version (]st -m):
Output of versioninfo():

[BeastyBlacksmith]

Can you please provide your versions? Also try

ENV["GRDIR"] = ""
using Pkg; Pkg.build("GR")