Fixed import issue

src/robofish/evaluate/evaluate.py

@@ -657,9 +657,8 @@ def evaluate_social_vector(
     try:
         from fish_models.models.pascals_lstms.attribution import SocialVectors
     except ImportError:
-        raise ImportError(
-            "Please install the fish_models package to use this function."
-        )
+        warnings.warn("Please install the fish_models package to use this function.")
+        return
 
     if poses_from_paths is None:
         poses_from_paths, file_settings = utils.get_all_poses_from_paths(