When I try to plot something in the Julia REPL, I am getting the following error messages.

julia> ENV[“GRDIR”] = “”

“”julia> using Pkg

julia> Pkg.build(“GR”)

Building GR → “~/.julia/packages/GR/crXzk/deps/build.log”

julia> using Plots

julia> gr()

Plots.GRBackend()julia> plot(rand(20))

/home/hunter/.julia/packages/GR/crXzk/src/…/deps/gr/bin/gksqt: error while loading shared libraries: libQtGui.so.4: cannot open shared object file: No such file or directory

connect: Connection refused

GKS: can’t connect to GKS socket application

Did you start ‘gksqt’?GKS: Open failed in routine OPEN_WS

GKS: GKS not in proper state. GKS must be either in the state WSOP or WSAC in routine ACTIVATE_WS

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine FILLAREA

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine FILLAREA

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine TEXT

GKS: GKS not in proper state. GKS must be either in the state WSAC or SGOP in routine POLYLINE

I have already tried the solution in