---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/core/dimension.py:1493, in Dimensioned._repr_mimebundle_(self, include, exclude)
   1486 def _repr_mimebundle_(self, include=None, exclude=None):
   1487     """Resolves the class hierarchy for the class rendering the
   1488     object using any display hooks registered on Store.display
   1489     hooks.  The output of all registered display_hooks is then
   1490     combined and returned.
   1491 
   1492     """
-> 1493     return Store.render(self)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/core/options.py:1519, in Store.render(cls, obj)
   1517 data, metadata = {}, {}
   1518 for hook in hooks:
-> 1519     ret = hook(obj)
   1520     if ret is None:
   1521         continue

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/ipython/display_hooks.py:330, in pprint_display(obj)
    328 if not ip.display_formatter.formatters["text/plain"].pprint:
    329     return None
--> 330 return display(obj, raw_output=True)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/ipython/display_hooks.py:298, in display(obj, raw_output, **kwargs)
    296 elif isinstance(obj, (CompositeOverlay, ViewableElement)):
    297     with option_state(obj):
--> 298         output = element_display(obj)
    299 elif isinstance(obj, (Layout, NdLayout, AdjointLayout)):
    300     with option_state(obj):

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/ipython/display_hooks.py:193, in display_hook.<locals>.wrapped(element)
    191 try:
    192     max_frames = OutputSettings.options["max_frames"]
--> 193     mimebundle = fn(element, max_frames=max_frames)
    194     if mimebundle is None:
    195         return {}, {}

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/ipython/display_hooks.py:231, in element_display(element, max_frames)
    228 if type(element) not in Store.registry[backend]:
    229     return None
--> 231 return render(element)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/ipython/display_hooks.py:62, in render(obj, **kwargs)
     59 if renderer.fig == "pdf":
     60     renderer = renderer.instance(fig="png")
---> 62 return renderer.components(obj, **kwargs)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/renderer.py:459, in Renderer.components(self, obj, fmt, comm, **kwargs)
    457 embed = not (dynamic or streams or self.widget_mode == "live") or config.embed
    458 if embed or config.comms == "default":
--> 459     return self._render_panel(plot, embed, comm)
    460 return self._render_ipywidget(plot)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/renderer.py:466, in Renderer._render_panel(self, plot, embed, comm)
    464 doc = Document()
    465 with config.set(embed=embed):
--> 466     model = plot.layout._render_model(doc, comm)
    467 if embed:
    468     return render_model(model, comm)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/viewable.py:803, in Viewable._render_model(self, doc, comm)
    801 if comm is None:
    802     comm = state._comm_manager.get_server_comm()
--> 803 model = self.get_root(doc, comm)
    805 if self._design and self._design.theme.bokeh_theme:
    806     doc.theme = self._design.theme.bokeh_theme

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/layout/base.py:386, in Panel.get_root(self, doc, comm, preprocess)
    382 def get_root(
    383     self, doc: Document | None = None, comm: Comm | None = None,
    384     preprocess: bool = True
    385 ) -> Model:
--> 386     root = super().get_root(doc, comm, preprocess)
    387     # ALERT: Find a better way to handle this
    388     if hasattr(root, 'styles') and 'overflow-x' in root.styles:

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/viewable.py:733, in Renderable.get_root(self, doc, comm, preprocess)
    731 wrapper = self._design._wrapper(self)
    732 if wrapper is self:
--> 733     root = self._get_model(doc, comm=comm)
    734     if preprocess:
    735         self._preprocess(root)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/layout/base.py:370, in Panel._get_model(self, doc, root, parent, comm)
    368 root = root or model
    369 self._models[root.ref['id']] = (model, parent)
--> 370 objects, _ = self._get_objects(model, [], doc, root, comm)
    371 props = self._get_properties(doc)
    372 props[self._property_mapping['objects']] = objects

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/layout/base.py:352, in Panel._get_objects(self, model, old_objects, doc, root, comm)
    350 else:
    351     try:
--> 352         child = pane._get_model(doc, root, model, comm)
    353     except RerenderError as e:
    354         if e.layout is not None and e.layout is not self:

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/pane/holoviews.py:494, in HoloViews._get_model(self, doc, root, parent, comm)
    492     plot = self.object
    493 else:
--> 494     plot = self._render(doc, comm, root)
    496 plot.pane = self
    497 backend = plot.renderer.backend

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/panel/pane/holoviews.py:588, in HoloViews._render(self, doc, comm, root)
    585     if comm:
    586         kwargs['comm'] = comm
--> 588 return renderer.get_plot(self.object, **kwargs)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/bokeh/renderer.py:77, in BokehRenderer.get_plot(self_or_cls, obj, doc, renderer, **kwargs)
     70 @bothmethod
     71 def get_plot(self_or_cls, obj, doc=None, renderer=None, **kwargs):
     72     """Given a HoloViews Viewable return a corresponding plot instance.
     73     Allows supplying a document attach the plot to, useful when
     74     combining the bokeh model with another plot.
     75 
     76     """
---> 77     plot = super().get_plot(obj, doc, renderer, **kwargs)
     78     if plot.document is None:
     79         plot.document = Document() if self_or_cls.notebook_context else curdoc()

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/renderer.py:300, in Renderer.get_plot(self_or_cls, obj, doc, renderer, comm, **kwargs)
    296     defaults = [kd.default for kd in plot.dimensions]
    297     init_key = tuple(
    298         v if d is None else d for v, d in zip(plot.keys[0], defaults, strict=None)
    299     )
--> 300     plot.update(init_key)
    301 else:
    302     plot = obj

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/plot.py:1086, in DimensionedPlot.update(self, key)
   1084 def update(self, key):
   1085     if len(self) == 1 and key in (0, self.keys[0]) and not self.drawn:
-> 1086         return self.initialize_plot()
   1087     item = self.__getitem__(key)
   1088     self.traverse(lambda x: setattr(x, "_updated", True))

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/geoviews/plotting/bokeh/plot.py:121, in GeoPlot.initialize_plot(self, ranges, plot, plots, source)
    119 def initialize_plot(self, ranges=None, plot=None, plots=None, source=None):
    120     opts = {} if isinstance(self, HvOverlayPlot) else {'source': source}
--> 121     fig = super().initialize_plot(ranges, plot, plots, **opts)
    122     style_element = self.current_frame.last if self.batched else self.current_frame
    123     el_ranges = match_spec(style_element, self.current_ranges) if self.current_ranges else {}

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/bokeh/element.py:2525, in ElementPlot.initialize_plot(self, ranges, plot, plots, source)
   2523 # Initialize plot, source and glyph
   2524 if plot is None:
-> 2525     plot = self._init_plot(key, style_element, ranges=ranges, plots=plots)
   2526     self._populate_axis_handles(plot)
   2527 else:

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/bokeh/element.py:1150, in ElementPlot._init_plot(self, key, element, plots, ranges)
   1146 subplots = list(self.subplots.values()) if self.subplots else []
   1148 axis_specs = {"x": {}, "y": {}}
   1149 axis_specs["x"]["x"] = (
-> 1150     *self._axis_props(plots, subplots, element, ranges, pos=0),
   1151     self.xaxis,
   1152     {},
   1153 )
   1154 if self.multi_y and subplots:
   1155     if not BOKEH_GE_3_2_0:

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/holoviews/plotting/bokeh/element.py:936, in ElementPlot._axis_props(self, plots, subplots, element, ranges, pos, dim, range_tags_extras, extra_range_name)
    934 else:
    935     try:
--> 936         l, b, r, t = self.get_extents(range_el, ranges, dimension=dim)
    937     except TypeError:
    938         # Backward compatibility for e.g. GeoViews=<1.10.1 since dimension
    939         # is a newly added keyword argument in HoloViews 1.17
    940         l, b, r, t = self.get_extents(range_el, ranges)

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/geoviews/plotting/plot.py:70, in ProjectionPlot.get_extents(self, element, ranges, range_type, **kwargs)
     68     extents = None
     69 else:
---> 70     extents = project_extents(extents, element.crs, proj)
     71 return (np.nan,)*4 if not extents else extents

File ~/micromamba/envs/unstructured-grid-viz-cookbook-dev/lib/python3.14/site-packages/geoviews/util.py:72, in project_extents(extents, src_proj, dest_proj, tol)
     67 def project_extents(extents, src_proj, dest_proj, tol=1e-6):
     68     x1, y1, x2, y2 = extents
     70     if (isinstance(src_proj, ccrs.PlateCarree) and
     71         not isinstance(dest_proj, ccrs.PlateCarree) and
---> 72         src_proj.proj4_params['lon_0'] != 0):
     73         xoffset = src_proj.proj4_params['lon_0']
     74         x1 = x1 - xoffset

KeyError: 'lon_0'