Interactive plot missing with geoviews

Hi,

I want to make an interactive plot with google map imagery as the base map. It works in python, but the plot is missing in Julia. Here is minimal example:

In Python:
```Python
from geoviews import element as elmt
GoogleMapsImagery = elmt.WMTS("https://mt1.google.com/vt/lyrs=s&x={X}&y={Y}&z={Z}",
name="GoogleMapsImagery")
GoogleMapsImagery
```
will generate a interactive map like

When converting it to Julia:
```Julia
using PyCall
elmt = pyimport("geoviews.element")
GoogleMapsImagery = elmt.WMTS("https://mt1.google.com/vt/lyrs=s&x={X}&y={Y}&z={Z}",
name="GoogleMapsImagery")
GoogleMapsImagery
```
No plot shows up. It only prints
```
PyObject :WMTS [Longitude,Latitude]
```

I am using Julia 1.8.2 and the PyCall.jl version is v1.94.1.
How to fix it? Thanks for your help!