=== Error ===
Request URL: Special:Notifications and `api.php?…meta=notifications`
Request ID: `XRPZEgpAIDcAAKHGhycAAABH`
```name=message
PHP Notice: Cannot access property on non-object
```
```name=trace,lines=10
#0 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/formatters/MentionInSummaryPresentationModel.php(26): MWExceptionHandler::handleError(integer, string, string, integer, array, array)
#1 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/formatters/EventPresentationModel.php(527): EchoMentionInSummaryPresentationModel->getBodyMessage()
#2 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/formatters/EchoModelFormatter.php(13): EchoEventPresentationModel->jsonSerialize()
#3 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/formatters/EchoEventFormatter.php(72): EchoModelFormatter->formatModel(EchoMentionInSummaryPresentationModel)
#4 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/DataOutputFormatter.php(189): EchoEventFormatter->format(EchoEvent)
#5 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/DataOutputFormatter.php(149): EchoDataOutputFormatter::formatNotification(EchoEvent, User, string, LanguageEn)
#6 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/api/ApiEchoNotifications.php(289): EchoDataOutputFormatter::formatOutput(EchoNotification, string, User, LanguageEn)
#7 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/api/ApiEchoNotifications.php(109): ApiEchoNotifications->getPropList(User, array, array, integer, NULL, string, NULL, boolean, boolean)
#8 /srv/mediawiki/php-1.34.0-wmf.11/extensions/Echo/includes/api/ApiEchoNotifications.php(40): ApiEchoNotifications->getLocalNotifications(array)
#9 /srv/mediawiki/php-1.34.0-wmf.11/includes/api/ApiQuery.php(250): ApiEchoNotifications->execute()
#10 /srv/mediawiki/php-1.34.0-wmf.11/includes/api/ApiMain.php(1583): ApiQuery->execute()
#11 /srv/mediawiki/php-1.34.0-wmf.11/includes/api/ApiMain.php(531): ApiMain->executeAction()
#12 /srv/mediawiki/php-1.34.0-wmf.11/includes/api/ApiMain.php(502): ApiMain->executeActionWithErrorHandling()
#13 /srv/mediawiki/php-1.34.0-wmf.11/api.php(87): ApiMain->execute()
#14 /srv/mediawiki/w/api.php(3): include(string)
```
=== Impact ===
Unknown / To be determined..
=== Notes ===
[Source: Echo:/MentionInSummaryPresentationModel.php](https://github.com/wikimedia/mediawiki-extensions-Echo/blob/05499e044677cbd821b88aa38c3f7cdcafd0a7bb/includes/formatters/MentionInSummaryPresentationModel.php#L26)
```lang=php
public function getBodyMessage() {
$revision = $this->event->getRevision();
if ( $revision && $this->userCan( RevisionRecord::DELETED_COMMENT ) ) {
$summary = $revision->getComment()->text;
```
Affects en.wikipedia, zh-yue.wikipedia, en.wiktionary and others.
Seen since at least 1.34-wmf.6.