Fix typo.

services/classifier/xrulelookup.py

@@ -16,7 +16,7 @@ import sre_parse
 # Manually setup esmre==1.0.0
 try:
     import esmre as esm
-except ImportError:
+except (ModuleNotFoundError, ImportError):
     raise NotImplementedError("XRuleLookup needed ESMRE library for worked. Please, install it from pip")
 import bitarray