From 545146349c3c28282cbb60d503f06df473adc932 Mon Sep 17 00:00:00 2001
From: LF Marques <luizfelipe.unesp@gmail.com>
Date: Wed, 24 Jul 2024 16:55:53 +0100
Subject: [PATCH] Adding f-string to validation error which is missing (#6748)

---
 vllm/entrypoints/chat_utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vllm/entrypoints/chat_utils.py b/vllm/entrypoints/chat_utils.py
index 83abc40888137..dca4523d1a27d 100644
--- a/vllm/entrypoints/chat_utils.py
+++ b/vllm/entrypoints/chat_utils.py
@@ -107,7 +107,7 @@ def _image_token_str(model_config: ModelConfig,
         return tokenizer.decode(model_config.hf_config.image_token_index)
     if model_type == "chameleon":
         return "<image>"
-    raise TypeError("Unknown model type: {model_type}")
+    raise TypeError(f"Unknown model type: {model_type}")
 
 
 # TODO: Let user specify how to insert image tokens into prompt