Hi - I ran into an error with the visualizer python 3.7.4 The

flow

did run correctly? any suggestions?

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

full traceback

Ah there we go - the actual uncaught exception here is

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 do have it installed but I do need to make sure that it os on the 'PATH'

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

Thank you I did not know that

excellent!

Thank you -- FWIW: I am migrating from aws step function.

very cool - I’d really love to hear about your experiences with that migration if you have some time

yes. does phone work?