AttributeError: 'CropProduction' object has no attribute '_meta'
self = <climada_petals.entity.exposures.test.test_crop_production.TestCropProduction testMethod=test_from_area_and_yield_nc4>

    def test_from_area_and_yield_nc4(self):
        """Test defining crop_production Exposure from area and yield
        data extracted from netcdf test data for Switzerland"""
        exp = cp.CropProduction.from_area_and_yield_nc4('whe', 2, 2,
                                                     FILENAME_YIELD, FILENAME_AREA,
                                                     'yield.tot', 'cultivated area all',
                                                     input_dir=INPUT_DIR)
    
        self.assertEqual(exp.crop, 'whe')
        self.assertEqual(exp.gdf.shape[0], 55)
>       self.assertEqual(exp._meta['width'] * exp._meta['height'], 55)
E       AttributeError: 'CropProduction' object has no attribute '_meta'

climada_petals/entity/exposures/test/test_crop_production.py:45: AttributeError