lgellis edited a comment on issue #3170: ERROR: {"error": "Connection
failed!\n\nThe error message returned was:\nNo module named psycopg2"
URL:
https://github.com/apache/incubator-superset/issues/3170#issuecomment-542919634
I faced the exact same issue, and finally realized it was b/c i was
installing the pkgs on my computer but that superset was installed in a virtual
environment as suggested in the [install
guide](https://superset.incubator.apache.org/installation.html#python-virtualenv).
I just posted the following answer to [stack
overflow](https://stackoverflow.com/questions/52218761/superset-importerror-no-module-named-psycopg2/58422515#58422515).
I hope it helps ppl:
A good indicator to see if you searched in a virtual environment is to
search for where you installed superset and if it's in a folder venv, it's
likely in the virutal environment.
You need to ensure that the python packages are installed in your virtual
environment as well. Installing on your local computer will not work.
Go to where you installed superset (in my case /Applications/venv/), and
activate the venv:
`. venv/bin/activate`
Install your packages
`pip install psycopg2`
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