diff --git a/uapi/appapi.py b/uapi/appapi.py
index b792be2..69d6dee 100644
--- a/uapi/appapi.py
+++ b/uapi/appapi.py
@@ -141,7 +141,13 @@ class UAPI:
 		ns = self.env.copy()
 		ns.update(params)
 		te = self.env.tmpl_engine
-		return await te.renders(tmplstr, ns)
+		try:
+			ret = await te.renders(tmplstr, ns)
+			return ret
+		except Exception as e:
+			e = Exception(f'{e}:{tmplstr=}, {ns=}')
+			exception(f'{e}')
+			raise e
 
 	async def get_uapis(self, sor, upappid, apiname, callerid, params={}):
 		self.env.update(params)