遵循地理彩色卫星图像教程时，我在MetPy中遇到错误。具体来说，标题为“具有对地静止投影的图”的部分。该损坏大约在两周前发生，功能尚未恢复。考虑以下代码：

from xarray import open_dataset  
import metpy

data_dir = '.'  
color_file = 'OR_ABI-L1b-RadC-M3C01_G16_s20180152002235_e20180152005008_c20180152005054.nc'  
c = open_dataset('/'.join([data_dir,color_file]))  
dat = c.metpy.parse_cf('Rad')

此块在功能上与MetPy geocolor卫星教程中提供的块相似。直到最近，它都运行良好。现在出现以下错误：

Traceback (most recent call last):  
  File "<stdin>",line 1,in module  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/metpy/xarray.py",line 191,in parse_cf  
    from .plots.mapping import CFProjection  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/metpy/plots/__init__.py",line 13,in module  
    from .skewt import *  # noqa: F403  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/metpy/plots/skewt.py",line 28,in module  
    from ..calc import dewpoint,dry_lapse,moist_lapse,vapor_pressure  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/metpy/calc/__init__.py",line 7,in module  
    from .cross_sections import *  # noqa: F403  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/metpy/calc/cross_sections.py",line 14,in module  
    from .tools import first_derivative  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/metpy/calc/tools.py",line 101,in module  
    def find_intersections(x,a,b,direction='all'):  
  File "/usr/local/anaconda3/lib/python3.7/site-packages/pint/registry_helpers.py",line 248,in decorator  
    % (func.__name__,count_params,len(args))  
TypeError: find_intersections takes 4 parameters,but 3 units were passed

这里似乎是什么问题？有解决方法吗？