I have Magento 2.3.1 on digitalocean plesk panel
It shows error like bellow
[2019-04-22 11:36:49] main.WARNING: Memory size allocated for the temporary table is more than 20% of innodb_buffer_pool_size. Please update innodb_buffer_pool_size or decrease batch size value (which decreases memory usages for the temporary table). Current batch size: 100000; Allocated memory size: 130000000 bytes; InnoDB buffer pool size: 134217728 bytes.