Error in mglean.plots.plot_animal_tree()

Answer
　mglean.plots.plot_animal_tree() should display the image using the step below.

• 1) Otherwise, the following error will occur:
• 5) or there will be no video and no errors.
  The graphviz here is to use 1) graphviz(dot) from Python.
• I haven't checked, but I feel that Channels in 3) and Channels must be the same when executing code.

ExcutableNotFoud: failed to execute ['dot', '-Tpng', '-O', 'tmp'], make sure the Graphviz executable are on your systems' PATH

Step
　1)Install graphviz on Win10
　　Add a path with dot.exe to the environment variable Path
　2)Launch Anaconda Navigator on Win10
　3)Launch CMD.exe Prompt at ANACONDA NAVIGATOR
　4)Install mglearn on CMD

 pip install mglearn

5) Install graphviz on CMD

 pip install graphviz

Confirmed Code

import mglearn
mglearn.plots.plot_animal_tree()

Results