Urban Nature Access assumes the LULC has a defined nodata value

[phargogh]

A user on the forums reported this exception, which points to an undefined nodata value when masking out certain classes:

Traceback (most recent call last):
File “natcap\invest\utils.py”, line 164, in prepare_workspace
File “invest\cli.py”, line 469, in main
File “natcap\invest\urban_nature_access.py”, line 781, in execute
File “taskgraph\Task.py”, line 674, in add_task
File “taskgraph\Task.py”, line 1093, in _call
File “natcap\invest\urban_nature_access.py”, line 2615, in _mask_raster
File “pygeoprocessing\geoprocessing.py”, line 517, in raster_calculator
File “natcap\invest\urban_nature_access.py”, line 2612, in _mask
TypeError: int() argument must be a string, a bytes-like object or a real number, not ‘NoneType’