join output tokens

app.py

@@ -30,8 +30,8 @@ def feedback(text):
         feedback = f'Looks good! Keep up the good work'
     else:
         suggestion = grammar_tokenizer.batch_decode(corrections[0], clean_up_tokenization_spaces=True, skip_special_tokens=True)
-        feedback = f'\'{suggestion}\' might be a little better'
-    return f'{feedback.join(" ")}'
+        feedback = f'\'{"".join(suggestion)}\' might be a little better'
+    return feedback
 
 iface = gr.Interface(
     chat,