graphviz.backend.ExecutableNotFound: failed to execute ['dot', '-Tpng'], make sure the Graphviz executables are on your systems' PATH
问题 I wasn't able to find any solution to this issue for one hour and decided better to ask here. The only rich info is given here with no detailed instructions to match my case. I am on Windows 10, using PyCharm to connect to offline Ubuntu 16.04 server to try some machine learning classification. The code is working to some point, then throwing this Traceback (most recent call last): File "/home/user/.local/lib/python3.5/site-packages/graphviz/backend.py", line 159, in run proc = subprocess