Exporting causes fatal error #62

Traceback (most recent call last):
  File "C:\Users\arild\geomaker\env\Lib\site-packages\geomaker\__main__.py", line 841, in export_data
    dialog = ExporterDialog(self.poly, project)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\arild\geomaker\env\Lib\site-packages\geomaker\__main__.py", line 122, in __init__
    for category, entries in export.iter_map_categories():
  File "C:\Users\arild\geomaker\env\Lib\site-packages\geomaker\export.py", line 147, in iter_map_categories
    filtered_keys = [key for key, name in category['entries'].items() if name in colormap.cmap_d]
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\arild\geomaker\env\Lib\site-packages\geomaker\export.py", line 147, in <listcomp>
    filtered_keys = [key for key, name in category['entries'].items() if name in colormap.cmap_d]
                                                                                 ^^^^^^^^^^^^^^^
AttributeError: module 'matplotlib.cm' has no attribute 'cmap_d'