fix: Update count_tokens function in utils.py

application/utils.py

@@ -1,6 +1,6 @@
 from transformers import GPT2TokenizerFast
 
-
+tokenizer = GPT2TokenizerFast.from_pretrained('gpt2')
 def count_tokens(string):
-    tokenizer = GPT2TokenizerFast.from_pretrained('gpt2')
+    
     return len(tokenizer(string)['input_ids'])