[FIX] auth_totp_mail_enforce: friendlier error message

steps to reproduce:
- install the module "2FA by mail" (auth_totp_mail_enforce)
- open settings (this should bring the settings of the settings app)
- activate "Two-factor authentification enforcing policy" to "Employees only"
 (or "All users") and save
- try to (re)connect with a user (demo/demo or admin/admin) 

before this commit:
- internal server error

after this commit:
- error is passed to the user, allowing him (or the admin) to
debug without contacting odoo support

opw-3624816

closes odoo/odoo#147196

X-original-commit: a449210cc18f64460096cb43b3633d4861120d0e
Signed-off-by: Denis Ledoux (dle) <dle@odoo.com>

addons/auth_totp_mail_enforce/controllers/home.py

@@ -1,10 +1,13 @@
 # -*- coding: utf-8 -*-
+import logging
 import odoo.addons.auth_totp.controllers.home
 
 from odoo import http
 from odoo.exceptions import AccessDenied, UserError
 from odoo.http import request
 
+_logger = logging.getLogger(__name__)
+
 
 class Home(odoo.addons.auth_totp.controllers.home.Home):
     @http.route()
@@ -22,5 +25,7 @@ class Home(odoo.addons.auth_totp.controllers.home.Home):
             response.qcontext['user']._send_totp_mail_code()
         except (AccessDenied, UserError) as e:
             response.qcontext['error'] = str(e)
-
+        except Exception as e:
+            _logger.exception('Unable to send TOTP email')
+            response.qcontext['error'] = str(e)
         return response