# Previewgenerator App 1.0.3 | Doctrine-DBAL-Exception-DriverException

**URL:** <https://help.nextcloud.com/t/previewgenerator-app-1-0-3-doctrine-dbal-exception-driverexception/10177>\
**Category:** ℹ️ Support\
**Created:** [March 15, 2017, 3:59pm UTC](https://help.nextcloud.com/t/previewgenerator-app-1-0-3-doctrine-dbal-exception-driverexception/10177 "2017-03-15T15:59:26Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![uusijani](https://help.nextcloud.com/user_avatar/help.nextcloud.com/uusijani/32/666_2.png) [@uusijani](https://help.nextcloud.com/u/uusijani)\
**Post date:** [March 30, 2017, 5:58pm UTC](https://help.nextcloud.com/t/previewgenerator-app-1-0-3-doctrine-dbal-exception-driverexception/10177/2 "2017-03-30T17:58:06Z")

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Looks like it waits a fixed 30 minutes before letting you run it again. You can either wait it out (as you probably have by now) or, if you’re impatient (like me) and really sure it’s not running already, `SELECT * FROM 'oc_appconfig' WHERE 'configkey' LIKE 'lastActivity'` and delete that timestamp.

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_[View the full topic](https://help.nextcloud.com/t/previewgenerator-app-1-0-3-doctrine-dbal-exception-driverexception/10177)._