python 报错：RuntimeError: unknown coordinate type : 8 怎么解决：？？

```python

    return draw(artist, renderer, *args, **kwargs)
  File "C:\Users\Win10\AppData\Local\Programs\Python\Python39\lib\site-packages\matplotlib\text.py", line 1954, in draw
    self.update_positions(renderer)
  File "C:\Users\Win10\AppData\Local\Programs\Python\Python39\lib\site-packages\matplotlib\text.py", line 1876, in update_positions
    self.set_transform(self._get_xy_transform(renderer, self.anncoords))
  File "C:\Users\Win10\AppData\Local\Programs\Python\Python39\lib\site-packages\matplotlib\text.py", line 1426, in _get_xy_transform
    raise RuntimeError("unknown coordinate type : %s" % s)
RuntimeError: unknown coordinate type : 8

```

贴一下代码。报错是未知坐标类型 8