AttributeError: 'LGEOS360' object has no attribute 'GEOSBufferWithParams'

I saw this same error when trying to import geopandas. Simply restarting the python kernal worked for me, for now. I did not have to create a new conda environment. I am on BigSur 11.1 running Python 3.8 in VS Code 1.47.

Cross posting the open issue from Shapely that seems related: https://github.com/Toblerity/Shapely/issues/1038.

In my case, Shapely is a dependency of geopandas: https://geopandas.org/getting_started/install.html#dependencies.

I had the same issue after upgrading to Big Sur on an Intel Mac. Conda reported several inconsistencies that could not be resolved in 3 hours so I just killed the process. Then the following steps worked:

1. Remove Anaconda - this guide is helpful.
2. Install Anaconda 2020.11 - The release notes make no mention of Big Sur, but given 2020.11 was released after the new macOS, I took a leap of faith.
3. Get serious with virtual environments and create one for your mapping project. I ended up going with Python 3.6 for the environment. Follow this guide to use the setup of the environment as your Jupyter Notebook kernel.
4. Apparently there are some Mac-specific issues related to geoplotting packages. I followed the advice from here and installed geoplot, cartopy and shapely without binaries using pip install geoplot --no-binary geoplot (geoplot as an example).

I know that scrapping the Anaconda installation seems like a drastic move, but I could not find a workaround with the resources available online. Maybe waiting longer could have worked, but life is short to verify that.

I have solved this problem by creating a new environment in the current Anaconda.

I had similar error. As malvoisen suggested, I did this:

1. Restart Anaconda
2. Anaconda asks automatically if I want to update -> Updated Anaconda(now conda 4.9.2)

It is now working fine.