I have the same issue on my VM on vertex AI workbench. On my conda environment "geemap" and other related modules/packages are installed. Nevertheless I can not visualize the map.
I appreciate any relevant comment on this topic.

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I have also faced the same issue in a fresh Anaconda3 installation and following the ipyleaflet installation documentation

When I run the first example from the documentation

from ipyleaflet import Map, Marker

center = (52.204793, 360.121558)

m = Map(center=center, zoom=15)

marker = Marker(location=center, draggable=True)
m.add(marker);

display(m)

# Now that the marker is on the Map, you can drag it with your mouse,
# it will automatically update the `marker.location` attribute in Python

# You can also update the marker location from Python, that will update the
# marker location on the Map:
marker.location = (50, 356)

I run into the following error

[Open Browser Console for more detailed log - Double click to close this message]
Failed to load model class 'LeafletMapModel' from module 'jupyter-leaflet'
@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.40eaa5b8e976096d50b2.js:1:74865
loadClass@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.40eaa5b8e976096d50b2.js:1:75222
@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:10738
loadModelClass@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:10890
@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:7531
_make_model@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:8204
@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:5148
new_model@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:5194
handle_comm_open@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js:1:3903
@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.40eaa5b8e976096d50b2.js:1:73409
@http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.40eaa5b8e976096d50b2.js:1:73415
@http://localhost:8888/static/lab/jlab_core.0ce4be9dd0d52754fd8a.js:2:1039655

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Any solutions?

I getting a similar or related error:

[Open Browser Console for more detailed log - Double click to close this message]
Failed to load model class 'LeafletMapModel' from module 'jupyter-leaflet'
Error: No version of module jupyter-leaflet is registered
at f.loadClass (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.fe2572ece3b7955c89bb.js?v=fe2572ece3b7955c89bb:1:74933)
at f.loadModelClass (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/336.0a90bd910629a565bb7e.js?v=0a90bd910629a565bb7e:1:10728)
at f._make_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/336.0a90bd910629a565bb7e.js?v=0a90bd910629a565bb7e:1:7516)
at f.new_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/336.0a90bd910629a565bb7e.js?v=0a90bd910629a565bb7e:1:5136)
at f.handle_comm_open (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/336.0a90bd910629a565bb7e.js?v=0a90bd910629a565bb7e:1:3893)
at _handleCommOpen (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.fe2572ece3b7955c89bb.js?v=fe2572ece3b7955c89bb:1:73470)
at v._handleCommOpen (http://localhost:8888/static/notebook/3676.bundle.js:1:30808)
at async v._handleMessage (http://localhost:8888/static/notebook/3676.bundle.js:1:32702)

The Chrome Browser console is giving me:

Error: No version of module 336.0a90bd910629a565bb7e.js?v=0a90bd910629a565bb7e:1
....

Python 3.12.2
ipyleaflet 0.18.2
geemap 0.32.0

from ipyleaflet.

Did you try creating a new conda env to install the packages?

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@giswqs Thanks for the response

It's a new env and a new conda python installation

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How did you create the conda env and install the packages?

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@giswqs

This is basically what I have done

conda create -n pyGIS
conda activate pyGIS

started installations

conda install conda-forge::geopandas
conda install conda-forge::xarray
conda install conda-forge::conda-libmamba-solver
conda install conda-forge::cartopy
....

in order to add the env to jupyter

conda install conda-forge::ipykernel

add environ

python -m ipykernel install --user --name=pyGIS

then

conda install conda-forge::geemap

conda install conda-forge::geehydro

#=======================================================
#=======================================================

then opened a notebook & switched to the env

import geemap
import ee
import folium
import geehydro
import numpy as np
import ipyleaflet
import os

ee auth

ee.Authenticate()

init

ee.Initialize()

...

aw_dem = ee.ImageCollection("JAXA/ALOS/AW3D30/V3_2")

test plot

Map = geemap.Map()
Map.setCenter(25, -10.0, 3.0);
Map.addLayer( aw_dem, {}, 'dem')
Map

and the error shows up

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Try the following. Make sure ipyleaflet works properly before installing other packages.

conda create -n gee python=3.11
conda activate gee
conda install -n base mamba -c conda-forge
mamba install geemap -c conda-forge

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@giswqs

I have installed but I am still getting the same error

But I saw a number of warnings pertaining to libmamba ( warning libmamba) during the installations, I do not know if they have any effect

e.g.
warning libmamba Could not parse mod/etag header

warning libmamba Extracted package cache 'C:\Users\yyy\anaconda3\pkgs\msys2-conda-epoch-20160418-1' has invalid size
warning libmamba Extracted package cache 'C:\Users\yyy\anaconda3\pkgs\m2w64-gcc-libs-core-5.3.0-7' has invalid size
... ...

After installaton, I have also run :

C:\Users\yyy>jupyter labextension list

And I am getting:

    bqplot v0.5.44 enabled  X (python, bqplot)
    ipyevents v2.0.1 enabled ok
    ipytree v0.2.2 enabled ok
    jupyter-leaflet v0.18.2 enabled ok
    jupyterlab-plotly v5.19.0 enabled  X
    jupyterlab_pygments v0.3.0 enabled ok (python, jupyterlab_pygments)
    @jupyter-widgets/jupyterlab-manager v5.0.10 enabled ok (python, jupyterlab_widgets)

The following extensions are outdated:
bqplot
jupyterlab-plotly

Consider checking if an update is available for these packages.

I do not know if the "outdated" packages have an effect

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