Help! MySQL query error: Field 'z_thumb' doesn't have a default value

[levanthuc]

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XF\Db\Exception: MySQL query error [1364]: Field 'z_thumb' doesn't have a default value in src/XF/Db/AbstractStatement.php at line 217

1. XF\Db\AbstractStatement->getException() in src/XF/Db/Mysqli/Statement.php at line 196
2. XF\Db\Mysqli\Statement->getException() in src/XF/Db/Mysqli/Statement.php at line 77
3. XF\Db\Mysqli\Statement->execute() in src/XF/Db/AbstractAdapter.php at line 89
4. XF\Db\AbstractAdapter->query() in src/XF/Db/AbstractAdapter.php at line 172
5. XF\Db\AbstractAdapter->insert() in src/XF/Mvc/Entity/Entity.php at line 1440
6. XF\Mvc\Entity\Entity->_saveToSource() in src/XF/Mvc/Entity/Entity.php at line 1172
7. XF\Mvc\Entity\Entity->save() in src/XF/Service/Thread/Creator.php at line 285
8. XF\Service\Thread\Creator->_save() in src/XF/Service/ValidateAndSavableTrait.php at line 40
9. XF\Service\Thread\Creator->save() in src/XF/Pub/Controller/Forum.php at line 734
10. XF\Pub\Controller\Forum->actionPostThread() in src/XF/Mvc/Dispatcher.php at line 321
11. XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 248
12. XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 100
13. XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 50
14. XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2155
15. XF\App->run() in src/XF.php at line 389
16. XF::runApp() in index.php at line 20