diff --git a/docs/getting_started/faq/kbqa/kbqa_faq.md b/docs/getting_started/faq/kbqa/kbqa_faq.md
index 6442b948b..adf667a3c 100644
--- a/docs/getting_started/faq/kbqa/kbqa_faq.md
+++ b/docs/getting_started/faq/kbqa/kbqa_faq.md
@@ -37,7 +37,7 @@ VECTOR_STORE_TYPE=Chroma
 ```
 ##### Q3:When I use vicuna-13b, found some illegal character like this.
 <p align="left">
-  <img src="../../assets/faq/illegal_character.png" width="800px" />
+  <img src="https://github.com/eosphoros-ai/DB-GPT/assets/13723926/088d1967-88e3-4f72-9ad7-6c4307baa2f8" width="800px" />
 </p>
 
 Set KNOWLEDGE_SEARCH_TOP_SIZE smaller or set KNOWLEDGE_CHUNK_SIZE smaller, and reboot server.