```
[08a09c9f4968bff42dd6c232] [no req] MWContentSerializationException from line 299 of /srv/mediawiki/php-1.33.0-wmf.18/extensions/Wikibase/lib/includes/Store/EntityContentDataCodec.php: $entityId and $targetId can not be the same.
Backtrace:
#0 /srv/mediawiki/php-1.33.0-wmf.18/extensions/Wikibase/repo/includes/Content/EntityHandler.php(384): Wikibase\Lib\Store\EntityContentDataCodec->decodeRedirect(string, string)
#1 /srv/mediawiki/php-1.33.0-wmf.18/extensions/Wikibase/repo/includes/Content/EntityHandler.php(308): Wikibase\Repo\Content\EntityHandler->unserializeContent(string, string)
#2 /srv/mediawiki/php-1.33.0-wmf.18/includes/export/XmlDumpWriter.php(257): Wikibase\Repo\Content\EntityHandler->exportTransform(string, string)
#3 /srv/mediawiki/php-1.33.0-wmf.18/includes/export/WikiExporter.php(471): XmlDumpWriter->writeRevision(stdClass)
#4 /srv/mediawiki/php-1.33.0-wmf.18/includes/export/WikiExporter.php(431): WikiExporter->outputPageStreamBatch(Wikimedia\Rdbms\ResultWrapper, stdClass)
#5 /srv/mediawiki/php-1.33.0-wmf.18/includes/export/WikiExporter.php(256): WikiExporter->dumpPages(string, boolean)
#6 /srv/mediawiki/php-1.33.0-wmf.18/includes/export/WikiExporter.php(141): WikiExporter->dumpFrom(string, boolean)
#7 /srv/mediawiki/php-1.33.0-wmf.18/maintenance/includes/BackupDumper.php(280): WikiExporter->pagesByRange(integer, integer, boolean)
#8 /srv/mediawiki/php-1.33.0-wmf.18/maintenance/dumpBackup.php(83): BackupDumper->dump(integer, integer)
#9 /srv/mediawiki/php-1.33.0-wmf.18/maintenance/doMaintenance.php(94): DumpBackup->execute()
#10 /srv/mediawiki/php-1.33.0-wmf.18/maintenance/dumpBackup.php(138): require_once(string)
#11 /srv/mediawiki/multiversion/MWScript.php(100): require_once(string)
#12 {main}
```