mariabackup based on MariaDB- parallel backup issue(write operation)

We have ​executed the mariabackup​ command​ ​in MariaDB version 10.4.12 ​during the write operation ongoing. The size of the DB is almost 200 GB. The write operation in DB was very high. We want to check the backup set during the write operation parallel way but we had the incomplete backup set with the following log as below: The log contains the "This target seems to be not prepared yet." 2020-09-11 6:47:07 0 [Note] InnoDB: Starting a batch to recover 2483 pages from redo log. 2020-09-11 6:47:10 0 [Note] InnoDB: Starting a batch to recover 3852 pages from redo log. 2020-09-11 6:47:16 0 [Note] InnoDB: Starting a batch to recover 5707 pages from redo log. Could you please let us know any solution/suggestion to have a complete backup set during the heavy write operation ongoing during mariabackup command execution?