This page lists common issues encountered when installing FiftyOne and possible solutions. If you encounter an issue that this page doesn’t help you resolve, feel free to open an issue on GitHub or contact us on Slack.
Most installation issues can be fixed by upgrading some packages and then rerunning the FiftyOne install. So, try this first before reading on:
pip install --upgrade pip setuptools wheel pip install fiftyone
“No matching distribution found”¶
If you attempt to install FiftyOne with a version of Python or pip that is too old, you may encounter errors like these:
ERROR: Could not find a version that satisfies the requirement fiftyone (from versions: none) ERROR: No matching distribution found for fiftyone
Could not find a version that satisfies the requirement fiftyone-brain (from versions: ) No matching distribution found for fiftyone-brain
fiftyone requires Python '>=3.6' but the running Python is 3.4.10
To resolve this, you will need to use Python 3.6 or newer, and pip 19.3 or newer. See the installation guide for details. If you have installed a suitable version of Python in a virtual environment and still encounter this error, ensure that the virtual environment is activated. See the virtual environment setup guide for more details.
“Package ‘fiftyone’ requires a different Python”¶
This error occurs when attempting to install FiftyOne with an unsupported Python version (either too old or too new). See the installation guide for details on which versions of Python are supported by FiftyOne.
If you have multiple Python installations, you may be using
pip from an
incompatible Python installation. Run
pip --version to see which Python
pip is using. If you see an unsupported or unexpected Python version
reported, there are several possible causes, including:
You may not have activated a virtual environment in your current shell. Refer to the virtual environment setup guide for details.
If you are intentionally using your system Python installation instead of a virtual environment, your system-wide
pipmay use an unsupported Python version. For instance, on some Linux systems,
pipuses Python 2, and
pip3uses Python 3. If this is the case, try installing FiftyOne with
You may not have a compatible Python version installed. See the installation guide for details.
“No module named skbuild”¶
On Linux, this error can occur when attempting to install OpenCV with an old pip version. To fix this, upgrade pip. See the installation guide for instructions, or the opencv-python FAQ for more details.
Videos do not load in the App¶
You will need to install FFmpeg in order to work with video datasets:
If you are using IPython and a virtual environment for FiftyOne, IPython must be installed in the virtual environment, per the installation guide. If you attempt to use a system-wide IPython installation in a virtual environment with FiftyOne, you may encounter errors such as:
.../IPython/core/interactiveshell.py:935: UserWarning: Attempting to work in a virtualenv. If you encounter problems, please install IPython inside the virtualenv.
File ".../fiftyone/core/../_service_main.py", line 29, in <module> import psutil ModuleNotFoundError: No module named 'psutil'
ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused
To resolve this, install IPython in your active virtual environment (see the virtual environment guide for more information):
pip install ipython
MongoDB compatibility issues on Linux¶
fiftyone-db package includes a build of MongoDB that works on Ubuntu
18.04 and several other modern distributions. If this build does not work on
your distribution, you may encounter an error similar to:
/usr/local/lib/python3.6/dist-packages/fiftyone/db/bin/mongod: failed to launch: /usr/local/lib/python3.6/dist-packages/fiftyone/db/bin/mongod: error while loading shared libraries: libcrypto.so.1.1: cannot open shared object file: No such file or directory
RuntimeError: Could not find mongod >= 4.4
To resolve this, you can install an alternative package on some distributions, detailed below, or install a compatible version of MongoDB system-wide.
Alternative builds of MongoDB are available as pip packages for the
distributions listed below, and can be installed by running the corresponding
command. Note that these packages must be installed after the
package; if you install
fiftyone afterwards, you can fix your MongoDB
installation by adding
--force-reinstall to the commands below.
FiftyOne also supports using an existing MongoDB installation (version 4.4 or
newer). This can be installed through many distributions’ package managers.
Note that only the
mongod (server) binary is required, so you may not need
the complete MongoDB package. For example, Debian-based distributions make this
available in the
If your distribution does not provide a new-enough version of MongoDB, or if
you would like to install a newer version, see
the MongoDB documentation
for instructions on installing MongoDB on your distribution. Note that you only
mongodb-org-server package in this case.
To verify the version of your MongoDB installation, run
which should produce output that looks like this:
db version v4.2.6 git version: 20364840b8f1af16917e4c23c1b5f5efd8b352f8 OpenSSL version: OpenSSL 1.1.1 11 Sep 2018 allocator: tcmalloc modules: none build environment: distmod: ubuntu1804 distarch: x86_64 target_arch: x86_64
Verify that the version after “db version” is at least 4.4.