checking for False is not sufficent for NoneType/unset configs

src/axolotl/utils/validation.py

@@ -5,12 +5,12 @@ def validate_config(cfg):
     if cfg.adapter == "qlora":
         if cfg.merge_lora:
             # can't merge qlora if loaded in 8bit or 4bit
-            assert cfg.load_in_8bit is False
-            assert cfg.load_4bit is False
+            assert cfg.load_in_8bit is not True
+            assert cfg.load_4bit is not True
             assert cfg.load_in_4bit is False
         else:
-            assert cfg.load_in_8bit is False
-            assert cfg.load_4bit is False
+            assert cfg.load_in_8bit is not True
+            assert cfg.load_4bit is not True
             assert cfg.load_in_4bit is True
     if not cfg.load_in_8bit and cfg.adapter == "lora":
         logging.warning("We recommend setting `load_in_8bit: true` for LORA finetuning")