Update handler.py

handler.py

@@ -43,6 +43,9 @@ class EndpointHandler:
         try:
             inputs = data.get("inputs")
             base64_string = inputs["base64"]
+              
+            if not base64_string:
+                return {"error": "No base64 string provided"}
             # Remove data URL prefix if present
             if ',' in base64_string:
                 base64_string = base64_string.split(',')[1]