add an error

app.py

@@ -30,6 +30,9 @@ def index():
         print("Tokenized:", tokenizer.tokenize(input_text))
         predictions = nlp(input_text)
         print("Predictions:", predictions)
+        if not predictions:
+            return "Error: No medical abbreviation detected in the input.", 400
+
 
         log_entry = {
             "timestamp": str(datetime.datetime.now()),