Hi - I ran into an error with the visualizer pytho...
# prefect-community
i
Hi - I ran into an error with the visualizer python 3.7.4 The
flow
did run correctly? any suggestions?
c
Hi @itay livni - could you describe the environment you ran this in and what version of Prefect you are running? That exception has an
except Exception
block, so I’m really surprised to see it get raised
Also, did you provide the full traceback?
i
full traceback
prefect version 0.6.6
c
Ah there we go - the actual uncaught exception here is
Copy code
graphviz.backend.ExecutableNotFound: failed to execute ['dot', '-Tpdf', '-O', 'tmpqh15cbky'], make sure the Graphviz executables are on your systems' PATH
In order to see your Flow visualization, you need to have Graphviz installed: http://www.graphviz.org/download/
i’ll try to make this error more informative
i
I do have it installed but I do need to make sure that it os on the 'PATH'
c
just in case you aren’t aware, the
graphviz
python package is only a python binding to the underlying
graphviz
software, so you need to install Graphviz linked above in addition to the python package
i
Thank you I did not know that
/home/ilivni/Downloads/node_viz.pdf
c
excellent!
i
Thank you -- FWIW: I am migrating from aws step function.
c
very cool - I’d really love to hear about your experiences with that migration if you have some time
i
yes. does phone work?