What this log means?

Your software
My Mautic version is: 3.3.3
My PHP version is: 7.3
My Database type and version is:

Your problem
My problem is: I don’t understand what this log means. but it says CRITICAL. how to solve this? is it safe to ignore.

These errors are showing in the log:

[2021-08-02 05:33:21] mautic.CRITICAL: Uncaught PHP Exception Doctrine\DBAL\Exception\DeadlockException: “An exception occurred while executing ‘UPDATE leads SET date_modified = ?, last_active = ? WHERE id = ?’ with params [“2021-08-02 05:33:20”, “2021-08-02 05:33:20”, “633”]: SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction” at /home/path/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php line 34 {“exception”:"[object] (Doctrine\DBAL\Exception\DeadlockException(code: 0): An exception occurred while executing ‘UPDATE leads SET date_modified = ?, last_active = ? WHERE id = ?’ with params [“2021-08-02 05:33:20”, “2021-08-02 05:33:20”, “633”]:\n\nSQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction at /home/path/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php:34, Doctrine\DBAL\Driver\PDOException(code: 40001): SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction at /home/path/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:123, PDOException(code: 40001): SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction at /home/path/public_html/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:121)"}

Steps I have tried to fix the problem: I have cleared cache

Did you solve it? I have the same issue
Thanks