MySQL shows the following error:
2020-08-19T05:53:50.427449Z 1 [ERROR] [MY-012639] [InnoDB] Write to file ./#innodb_temp/temp_6.ibt failed at offset 0, 81920 bytes should have been written, only 73728 were written. Operating system error number 28. Check that your OS and file system support files of this size. Check also that the disk is not full or a disk quota exceeded.
It seems there was not enough memory available and MySQL stopped. Can you try restarting it manually:
sudo /opt/bitnami/ctlscript.sh start mysql