diff --git a/skillagent/skillengine.py b/skillagent/skillengine.py
index 23cb44f..589d2d8 100644
--- a/skillagent/skillengine.py
+++ b/skillagent/skillengine.py
@@ -263,7 +263,11 @@ class IndustrialSkillEngine:
 			if f is None:
 				e = Exception(f'function({d.function} is not in env')
 				exception(f'{e}')
-				raise e
+				await self.write_output({
+                    "status": "FAILED",
+                    "error": f'{st=}, {e}'
+                })
+				return
 			try:
 				ret = ''
 				if inspect.iscoroutinefunction(f):