add more useful error message

Author: gngdb

smplx/body_models.py

@@ -142,7 +142,9 @@ def __init__(
         shapedirs = data_struct.shapedirs
         if (shapedirs.shape[-1] < self.SHAPE_SPACE_DIM):
             print(f'WARNING: You are using a {self.name()} model, with only'
-                  ' 10 shape coefficients.')
+                  ' 10 shape coefficients.\n'
+                  f'num_betas={num_betas}, shapedirs.shape={shapedirs.shape}, '
+                  f'self.SHAPE_SPACE_DIM={self.SHAPE_SPACE_DIM}')
             num_betas = min(num_betas, 10)
         else:
             num_betas = min(num_betas, self.SHAPE_SPACE_DIM)