我在活动的虚拟环境中使用 pip安装了Christoph Gohlke的预构建轮。Cartopy\xe2\x80\x910.20.2\xe2\x80\x91cp39\xe2\x80\x91cp39\xe2\x80\x91win_amd64.whl环境使用Python 3.9.5。当尝试导入 Cartopy 时，我收到以下错误消息。这曾经有效，现在不再有效，我不明白为什么。有谁知道问题可能是什么或者我缺少什么？
---------------------------------------------------------------------------\nImportError Traceback (most recent call last)\nInput In [4], in <cell line: 1>()\n----> 1 import cartopy\n 2 import cartopy.crs as ccrs\n 3 import cartopy.io.img_tiles as cimgt\n\nFile ~\\Downloads\\GitHub\\Project\\venv\\lib\\site-packages\\cartopy\\__init__.py:110, in <module>\n 105 pass\n 108 # Commonly used sub-modules. Imported here to provide end-user\n 109 # convenience.\n--> 110 import cartopy.crs\n 111 import cartopy.feature\n\nFile ~\\Downloads\\GitHub\\Project\\venv\\lib\\site-packages\\cartopy\\crs.py:27, in <module>\n 24 from pyproj.exceptions import ProjError\n 25 from shapely.prepared import prep\n---> 27 import cartopy.trace\n 30 try:\n 31 # …