# What this log means?

**URL:** <https://forum.mautic.org/t/what-this-log-means/20344>\
**Category:** Product Support\
**Tags:** mautic-3\
**Created:** [August 2, 2021, 2:45pm UTC](https://forum.mautic.org/t/what-this-log-means/20344 "2021-08-02T14:45:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![yukzanaly](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/yukzanaly/32/1769_2.png) [@yukzanaly](https://forum.mautic.org/u/yukzanaly)\
**Post date:** [August 2, 2021, 2:45pm UTC](https://forum.mautic.org/t/what-this-log-means/20344/1 "2021-08-02T14:45:33Z")

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**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

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<div class="post-metadata">

**Author:** ![antonio-lazzari](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/antonio-lazzari/32/737_2.png) [@antonio-lazzari](https://forum.mautic.org/u/antonio-lazzari)\
**Post date:** [May 16, 2022, 1:58pm UTC](https://forum.mautic.org/t/what-this-log-means/20344/2 "2022-05-16T13:58:58Z")

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Did you solve it? I have the same issue  
Thanks