I am too quick at copy pasta!

thanks to @KevinMartin

lib/dialects/mariadb/connector-manager.js

@@ -94,7 +94,7 @@ module.exports = (function() {
                 connection.queryType = 'read'
                 connection.queryType = 'read'
               }
               }
 
 
-              done(null, connection)
+              done(err, connection)
             }, config)
             }, config)
           },
           },
           destroy: function(client) {
           destroy: function(client) {
@@ -113,7 +113,7 @@ module.exports = (function() {
                 connection.queryType = 'write'
                 connection.queryType = 'write'
               }
               }
               
               
-              done(null, connection)
+              done(err, connection)
             }, self.config.replication.write)
             }, self.config.replication.write)
           },
           },
           destroy: function(client) {
           destroy: function(client) {