importosimportmatplotlibmatplotlib.rcParams["toolbar"]="toolmanager"importmatplotlib.pyplotaspltfrommatplotlib.backend_toolsimportToolToggleBaseclassCustomTool(ToolToggleBase):image=os.path.join(os.path.dirname(__file__),"icon.png")if__name__=="__main__":fig=plt.figure()toolmanager=fig.canvas.manager.toolmanagertoolbar=fig.canvas.manager.toolbartoolmanager.add_tool("custom",CustomTool)toolbar.add_tool("custom","group")

/home/[...]/mwe.py:4: UserWarning: Treat the new Tool classes introduced in v1.5 as experimental for now; the API and rcParam may change in future versions.  matplotlib.rcParams["toolbar"] = "toolmanager"Traceback (most recent call last):  File "/home/[...]/mwe.py", line 19, in <module>    toolbar.add_tool("custom", "group")  File "/home/[...]/lib/python3.10/site-packages/matplotlib/backend_bases.py", line 3377, in add_tool    self.add_toolitem(tool.name, group, position,  File "/home/[...]/lib/python3.10/site-packages/matplotlib/backends/_backend_tk.py", line 957, in add_toolitem    button = NavigationToolbar2Tk._Button(frame, name, image_file, toggle,  File "/home/[...]/lib/python3.10/site-packages/matplotlib/backends/_backend_tk.py", line 792, in _Button    NavigationToolbar2Tk._set_image_for_button(self, b)  File "/home/[...]/lib/python3.10/site-packages/matplotlib/backends/_backend_tk.py", line 734, in _set_image_for_button    im_alt = _recolor_icon(im, foreground)  File "/home/[...]/lib/python3.10/site-packages/matplotlib/backends/_backend_tk.py", line 722, in _recolor_icon    image_data[black_mask, :3] = colorValueError: shape mismatch: value array of shape (3,) could not be broadcast to indexing result of shape (0,2)