Log whole error in error handler

Author: dmitrizagidulin

lib/handlers/error-pages.js

@@ -15,7 +15,7 @@ const SELECT_PROVIDER_AUTH_METHODS = ['oidc']
  * @param next {Function}
  */
 function handler (err, req, res, next) {
-  debug('Error page because of ' + err.message)
+  debug('Error page because of ' + err)
 
   let locals = req.app.locals
   let authMethod = locals.authMethod