Fix failing test

src/axolotl/utils/validation.py

@@ -54,7 +54,7 @@ def validate_config(cfg):
             "Require cfg.hf_use_auth_token to be True for push_dataset_to_hub"
         )
 
-    if "falcon" in cfg.base_model.lower() and cfg.fsdp:
+    if (cfg.base_model and "falcon" in cfg.base_model.lower()) and cfg.fsdp:
         raise ValueError("FSDP is not supported for falcon models")
 
     # TODO