Error to_crs : ellipsoid do not belong to the same celestial body

[Skealz]

Versions :
geopandas : 0.6.2
pyproj : 2.3.1
(I am using conda)

When doing

tracks.crs = "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"
#Or
tracks.crs = {'init': 'epsg:4326'}
tracks_data = tracks.to_crs(crs=ccrs.PlateCarree(central_longitude=lonOffset).proj4_init)

I have :

pyproj.exceptions.ProjError: Error creating CRS to CRS.: (Internal Proj Error: proj_create_operations: Source and target ellipsoid do not belong to the same celestial body)

When searching for this issue I found some links saying that a verification has recently been added to pyproj to avoid mapping CRS to wrong planets (project Earth CRS to the Moon for example).

But this is not what I'm doing (maybe I'm misusing geopandas).

I tried downgrading to pyproj 1.9.6 and it perfectly works.

[martinfleis]

It looks okay from the Geopandas perspective. Seems to be caused by changes in pyproj.
cc @snowman2

[snowman2]

It is due to the plate caree implementation in cartopy. See:

• WIP: Updating to PROJ 6+ proj.h C API SciTools/cartopy#1252 (comment)
• WIP: Updating to PROJ 6+ proj.h C API SciTools/cartopy#1252 (comment)
• WIP: Updating to PROJ 6+ proj.h C API SciTools/cartopy#1252 (comment)