tryd to fix a oid connect related bug, but there is still a BIG problem

backend/tools/exception_decorator.py

@@ -1,4 +1,7 @@
 from backend import LrcException
+import logging
+
+logger = logging.getLogger("lrc.tools.exception_decorator")
 
 
 def exception_decorator(*exceptions):
@@ -8,6 +11,9 @@ def exception_decorator(*exceptions):
                 ret = func(*args, **kwargs)
                 return ret
             except exceptions as e:
+                logger.error(str(e))
                 raise LrcException(e)
+
         return new_func
-    return decorator
+
+    return decorator