**Steps to replicate the issue** (include links if applicable):
* Open a page on en.wikipedia.org
* Enable the twinkle gadget
* Click on TW gadget and click on Tag from the dropdown menu
* Search and fill in the forms to add the {{merge to}} template
* Click on add tag
**What happens?**:
Page should save successfully
**What should have happened instead?**:
The following error pops up sometimes (the UUID will be different): `[1e935168-0b71-4982-b586-8736860e3da7] Caught exception of type UnexpectedValueException`
**Other information** (browser name/version, screenshots, etc.):
{F37833156}
==== Error ====
* mwversion: 1.41.0-wmf.27
* reqId: 1e935168-0b71-4982-b586-8736860e3da7
* [[ https://logstash.wikimedia.org/app/dashboards#/view/AXFV7JE83bOlOASGccsT?_g=(time:(from:'2023-09-27T11:37:01.909Z',to:'2023-09-28T18:03:42.073Z'))&_a=(query:(query_string:(query:'reqId:%221e935168-0b71-4982-b586-8736860e3da7%22'))) | Find reqId in Logstash ]]
```name=normalized_message,lines=10
[{reqId}] {exception_url} UnexpectedValueException: Wikimedia\Rdbms\InsertQueryBuilder::execute can't have empty $rows value
```
```name=exception.trace,lines=10
from /srv/mediawiki/php-1.41.0-wmf.27/includes/libs/rdbms/querybuilder/InsertQueryBuilder.php(318)
#0 /srv/mediawiki/php-1.41.0-wmf.27/includes/watcheditem/WatchedItemStore.php(1145): Wikimedia\Rdbms\InsertQueryBuilder->execute()
#1 /srv/mediawiki/php-1.41.0-wmf.27/includes/watcheditem/WatchedItemStore.php(1109): WatchedItemStore->updateExpiries(Wikimedia\Rdbms\DBConnRef, string, string)
#2 /srv/mediawiki/php-1.41.0-wmf.27/includes/watcheditem/WatchedItemStore.php(1050): WatchedItemStore->updateOrDeleteExpiries(Wikimedia\Rdbms\DBConnRef, integer, array, string)
#3 /srv/mediawiki/php-1.41.0-wmf.27/includes/watcheditem/WatchedItemStore.php(978): WatchedItemStore->addWatchBatchForUser(User, array, string)
#4 /srv/mediawiki/php-1.41.0-wmf.27/includes/watchlist/WatchlistManager.php(382): WatchedItemStore->addWatch(User, MediaWiki\Title\Title, string)
#5 /srv/mediawiki/php-1.41.0-wmf.27/includes/watchlist/WatchlistManager.php(512): MediaWiki\Watchlist\WatchlistManager->addWatchIgnoringRights(User, MediaWiki\Title\Title, string)
#6 /srv/mediawiki/php-1.41.0-wmf.27/includes/editpage/EditPage.php(2676): MediaWiki\Watchlist\WatchlistManager->setWatch(boolean, User, MediaWiki\Title\Title, string)
#7 /srv/mediawiki/php-1.41.0-wmf.27/includes/editpage/EditPage.php(2533): MediaWiki\EditPage\EditPage->updateWatchlist()
#8 /srv/mediawiki/php-1.41.0-wmf.27/includes/editpage/EditPage.php(1805): MediaWiki\EditPage\EditPage->internalAttemptSave(array, boolean, boolean)
#9 /srv/mediawiki/php-1.41.0-wmf.27/includes/api/ApiEditPage.php(532): MediaWiki\EditPage\EditPage->attemptSave(array)
#10 /srv/mediawiki/php-1.41.0-wmf.27/includes/api/ApiMain.php(1929): ApiEditPage->execute()
#11 /srv/mediawiki/php-1.41.0-wmf.27/includes/api/ApiMain.php(906): ApiMain->executeAction()
#12 /srv/mediawiki/php-1.41.0-wmf.27/includes/api/ApiMain.php(877): ApiMain->executeActionWithErrorHandling()
#13 /srv/mediawiki/php-1.41.0-wmf.27/api.php(95): ApiMain->execute()
#14 /srv/mediawiki/php-1.41.0-wmf.27/api.php(48): wfApiMain()
#15 /srv/mediawiki/w/api.php(3): require(string)
#16 {main}
```