cannot plot into matplotlib subfigure

---------------------------------------------------------------------
TypeError                           Traceback (most recent call last)
Cell In[5], line 4
      2 subfig = fig.subfigures(1, 2)[0]
      3 ax = subfig.subplots()
----> 4 evoked.plot(axes=ax)

File /opt/mne/python/mne/evoked.py:889, in Evoked.plot(self, picks, exclude, unit, show, ylim, xlim, proj, hline, units, scalings, titles, axes, gfp, window_title, spatial_colors, zorder, selectable, noise_cov, time_unit, sphere, highlight, verbose)
    695 """Plot evoked data using butterfly plots.
    696 
    697 Left click to a line shows the channel name. Selecting an area by clicking
   (...)    885 .. versionadded:: 1.13.0
    886 """  # noqa: E501
    887 from .viz import plot_evoked
--> 889 return plot_evoked(
    890     self,
    891     picks=picks,
    892     exclude=exclude,
    893     unit=unit,
    894     show=show,
    895     ylim=ylim,
    896     proj=proj,
    897     xlim=xlim,
    898     hline=hline,
    899     units=units,
    900     scalings=scalings,
    901     titles=titles,
    902     axes=axes,
    903     gfp=gfp,
    904     window_title=window_title,
    905     spatial_colors=spatial_colors,
    906     zorder=zorder,
    907     selectable=selectable,
    908     noise_cov=noise_cov,
    909     time_unit=time_unit,
    910     sphere=sphere,
    911     highlight=highlight,
    912     verbose=verbose,
    913 )

File <decorator-gen-154>:12, in plot_evoked(evoked, picks, exclude, unit, show, ylim, xlim, proj, hline, units, scalings, titles, axes, gfp, window_title, spatial_colors, zorder, selectable, noise_cov, time_unit, sphere, highlight, verbose)

File /opt/mne/python/mne/viz/evoked.py:1269, in plot_evoked(evoked, picks, exclude, unit, show, ylim, xlim, proj, hline, units, scalings, titles, axes, gfp, window_title, spatial_colors, zorder, selectable, noise_cov, time_unit, sphere, highlight, verbose)
   1041 @verbose_static(
   1042     "picks_all",
   1043     "evoked_ylim_plot",
   (...)   1073     verbose=None,
   1074 ):
   1075     """Plot evoked data using butterfly plots.
   1076 
   1077     Left click to a line shows the channel name. Selecting an area by clicking
   (...)   1267     .. versionadded:: 1.13.0
   1268     """  # noqa: E501
-> 1269     return _plot_evoked(
   1270         evoked=evoked,
   1271         picks=picks,
   1272         exclude=exclude,
   1273         unit=unit,
   1274         show=show,
   1275         ylim=ylim,
   1276         proj=proj,
   1277         xlim=xlim,
   1278         hline=hline,
   1279         units=units,
   1280         scalings=scalings,
   1281         titles=titles,
   1282         axes=axes,
   1283         plot_type="butterfly",
   1284         gfp=gfp,
   1285         window_title=window_title,
   1286         spatial_colors=spatial_colors,
   1287         selectable=selectable,
   1288         zorder=zorder,
   1289         noise_cov=noise_cov,
   1290         time_unit=time_unit,
   1291         sphere=sphere,
   1292         highlight=highlight,
   1293     )

File /opt/mne/python/mne/viz/evoked.py:467, in _plot_evoked(evoked, picks, exclude, unit, show, ylim, proj, xlim, hline, units, scalings, titles, axes, plot_type, cmap, gfp, window_title, spatial_colors, selectable, zorder, noise_cov, colorbar, mask, mask_style, mask_cmap, mask_alpha, time_unit, show_names, group_by, sphere, highlight, draw)
    464     evoked = evoked.reconstruct_proj(origin=sphere[:3])
    466 if plot_type == "butterfly":
--> 467     _plot_lines(
    468         evoked.data,
    469         info,
    470         picks,
    471         fig,
    472         axes,
    473         spatial_colors,
    474         unit,
    475         units,
    476         scalings,
    477         hline,
    478         gfp,
    479         types,
    480         zorder,
    481         xlim,
    482         ylim,
    483         times,
    484         bad_ch_idx,
    485         titles,
    486         ch_types_used,
    487         selectable,
    488         False,
    489         line_alpha=1.0,
    490         nave=evoked.nave,
    491         time_unit=time_unit,
    492         sphere=sphere,
    493         highlight=highlight,
    494     )
    495     plt.setp(axes, xlabel=f"Time ({time_unit})")
    497 elif plot_type == "image":

File /opt/mne/python/mne/viz/evoked.py:917, in _plot_lines(data, info, picks, fig, axes, spatial_colors, unit, units, scalings, hline, gfp, types, zorder, xlim, ylim, times, bad_ch_idx, titles, ch_types_used, selectable, psd, line_alpha, nave, time_unit, sphere, highlight, linewidth, label_props)
    914             line.set_xdata([event.time, event.time])
    915     blit_manager.update()
--> 917 subscribe(fig, "time_change", on_time_change)
    919 return lines

File <decorator-gen-140>:12, in subscribe(fig, event_name, callback, verbose)

File /opt/mne/python/mne/viz/ui_events.py:447, in subscribe(fig, event_name, callback, verbose)
    424 @verbose_static()
    425 def subscribe(fig, event_name, callback, *, verbose=None):
    426     """Subscribe to an event on a figure's event channel.
    427 
    428     Parameters
   (...)    445     is published.
    446     """
--> 447     channel = _get_event_channel(fig)
    448     logger.debug(f"Subscribing to channel {channel}")
    449     if event_name not in channel:

File /opt/mne/python/mne/viz/ui_events.py:368, in _get_event_channel(fig)
    360 weakfig = weakref.ref(fig)
    362 # When the figure is closed, its associated event channel should be
    363 # deleted. This is a good time to set this up.
    364 
    365 # Hook up the above callback function to the close event of the figure
    366 # window. How this is done exactly depends on the various figure types
    367 # MNE-Python has.
--> 368 _validate_type(fig, (matplotlib.figure.Figure, Brain, EvokedField), "fig")
    369 this_delete_event_channel = partial(_delete_event_channel, weakfig=weakfig)
    370 if isinstance(fig, matplotlib.figure.Figure):

File /opt/mne/python/mne/utils/check.py:709, in _validate_type(item, types, item_name, type_name, extra)
    707 _item_name = "Item" if item_name is None else item_name
    708 _item_type = type(item) if item is not None else item
--> 709 raise TypeError(
    710     f"{_item_name} must be an instance of {type_name}{extra}, "
    711     f"got {_item_type} instead."
    712 )

TypeError: fig must be an instance of Figure, Brain, or EvokedField, got <class 'matplotlib.figure.SubFigure'> instead.