return wrong

app.py

@@ -4,7 +4,7 @@ def word_and_char_counter(text):
     words = text.split()
     num_words = len(words)
     num_chars = len(text.replace(" ", ""))  # Remove spaces before counting characters
-    return f{num_words} words, {num_chars} characters
+    return f"{num_words} words, {num_chars} characters"
 
 # Define your interface
 interface = gr.Interface(