diff --git a/rdagent/utils/agent/tpl.py b/rdagent/utils/agent/tpl.py
index 28345c34..6b44c57b 100644
--- a/rdagent/utils/agent/tpl.py
+++ b/rdagent/utils/agent/tpl.py
@@ -54,7 +54,11 @@ class RDAT:
 
         if path_part.startswith("."):
             yaml_file_path = caller_dir / f"{path_part[1:].replace('.', '/')}.yaml"
-            self.uri = f"{str(caller_dir.resolve().relative_to(PROJ_PATH)).replace('/', '.')}{uri}"
+            try:
+                # modify the uri to a raltive path to the project for easier finding prompts.yaml
+                self.uri = f"{str(caller_dir.resolve().relative_to(PROJ_PATH)).replace('/', '.')}{uri}"
+            except ValueError:
+                pass
         else:
             yaml_file_path = (PROJ_PATH / path_part.replace(".", "/")).with_suffix(".yaml")