fix some issues

models.py

@@ -33,6 +33,16 @@ def load_whisper(config):
         logger.error(f"Failed to load Whisper model: {e}", exc_info=True)
         return None
 
+def load_summarizer(config):
+    logger.info("Loading Summarization pipeline...")
+    try:
+        summarizer = pipeline("summarization", model=config.SUMMARIZER_MODEL)
+        logger.info("Summarization pipeline loaded.")
+        return summarizer
+    except Exception as e:
+        logger.error(f"Failed to load Summarization pipeline: {e}", exc_info=True)
+        return None
+
 def load_spacy(config):
     logger.info("Loading spaCy model...")