lgellis commented 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. 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:
you may have installed superset in a virtual environment as suggested in the
[install
guide](https://superset.incubator.apache.org/installation.html#python-virtualenv)
A good indicator 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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