only use errormator if it's actually turned on in .ini file

rhodecode/config/middleware.py

@@ -56,7 +56,7 b' def make_app(global_conf, full_stack=Tru'
 
         from rhodecode.lib.middleware.sentry import Sentry
         from rhodecode.lib.middleware.errormator import Errormator
-        if Errormator:
+        if Errormator and asbool(config['app_conf'].get('errormator')):
             app = Errormator(app, config)
         elif Sentry:
             app = Sentry(app, config)