Why this error keeps appearing even after I inputted using AlgebraOfGraphs and using PlotUtils

Basic Usage
1

UndefVarError: Lines not defined in Main
Suggestion: check for spelling errors or missing imports.
Hint: a global variable of this name may be made accessible by importing Makie in the current active module Main
Hint: a global variable of this name may be made accessible by importing CairoMakie in the current active module Main
Stacktrace:
[1] top-level scope

2

Please explain what you are trying to do and if you tried following the hint in the error message.