No description error 500

[driesbonte]

Description

Some entries trigger a error 500 when no seo description is filled in. When filling in a description the error is resolved.

Only production environment is triggering a error 500.

This error is triggered in the craft php errors:
#0 /data/sites/web/xxx/craft/vendor/yiisoft/yii2/db/Command.php(1304): yii\db\Schema->convertException()
#1 /data/sites/web/xxx/craft/vendor/yiisoft/yii2/db/Command.php(1165): yii\db\Command->internalExecute()
#2 /data/sites/web/xxx/craft/vendor/yiisoft/yii2/db/Command.php(421): yii\db\Command->queryInternal()
#3 /data/sites/web/xxx/craft/vendor/yiisoft/yii2/db/Query.php(287): yii\db\Command->queryOne()
#4 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/db/Query.php(168): yii\db\Query->one()
#5 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/services/Elements.php(600): craft\db\Query->one()
#6 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/web/UrlManager.php(397): craft\services\Elements->getElementByUri()
#7 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/web/UrlManager.php(354): craft\web\UrlManager->_getMatchedElementRoute()
#8 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/web/UrlManager.php(114): craft\web\UrlManager->_getRequestRoute()
#9 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/web/Request.php(1313): craft\web\UrlManager->parseRequest()
#10 /data/sites/web/xxx/craft/vendor/yiisoft/yii2/web/Application.php(83): craft\web\Request->resolve()
#11 /data/sites/web/xxx/craft/vendor/craftcms/cms/src/web/Application.php(259): yii\web\Application->handleRequest()
#12 /data/sites/web/xxx/craft/vendor/yiisoft/yii2/base/Application.php(392): craft\web\Application->handleRequest()
#13 /data/sites/web/xxxbe/web/company/production/index.php(22): yii\base\Application->run()
#14 {main}
Additional Information:
Array
(
[0] => HY000
[1] => 2006
[2] => MySQL server has gone away
)

Additional info

• Craft version: Craft Pro 3.7.5
• SEO version: 3.7.4
• PHP version: 7.4.11
• Database driver & version: MySQL 5.7.31
• Other Plugins: