diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index 9ea047c..2bb3f65 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -325,19 +325,8 @@ class Certificado(object):
         self._path_key = paths['path_key']
         self._path_cer = paths['path_cer']
         self._modulus = ''
-        #~ self._save_files()
         self.error = ''
 
-    #~ def _save_files(self):
-        #~ try:
-            #~ self._path_key = _save_temp(bytes(self._key))
-            #~ self._path_cer = _save_temp(bytes(self._cer))
-        #~ except Exception as e:
-            #~ log.error(e)
-            #~ self._path_key = ''
-            #~ self._path_cer = ''
-        #~ return
-
     def _kill(self, path):
         try:
             os.remove(path)
diff --git a/source/app/models/main.py b/source/app/models/main.py
index dc177bc..976b390 100644
--- a/source/app/models/main.py
+++ b/source/app/models/main.py
@@ -3479,6 +3479,9 @@ def authenticate(args):
         obj = Usuarios.get(usuario=args['usuario'], es_activo=True)
     except Usuarios.DoesNotExist:
         return respuesta, None
+    except ProgrammingError as e:
+        log.error(e)
+        return respuesta, None
 
     if not obj.contraseña.check_password(args['contra']):
         return respuesta, None