NC29:Fulltextsearch live crash

Running Nextcloud 29.0.3.4

Several times I have had this error (which caused my fulltextsearch:live service to crash) :

Error: Typed property OC\FullTextSearch\Model\IndexDocument::$access must not be accessed before initialization in /nextcloud/lib/private/FullTextSearch/Model/IndexDocument.php:775

Several times I managed to fix the problem with a simple fulltextsearch:index
but on the last crash it didn't work.

It looks a lot like https://github.com/nextcloud/fulltextsearch_elasticsearch/issues/375

To correct the problem I commented this (line 775 of the file /nextcloud/lib/private/FullTextSearch/Model/IndexDocument.php)

public function jsonSerialize(): array {
return [
'id' => $this->getId(),
'providerId' => $this->getProviderId(),
#'access' => $this->access,
'modifiedTime' => $this->getModifiedTime(),
'title' => $this->getTitle(),
'link' => $this->getLink(),
'index' => $this->index,
'source' => $this->getSource(),
'info' => $this->getInfoAll(),
'hash' => $this->getHash(),
'contentSize' => $this->getContentSize(),
'tags' => $this->getTags(),
'metatags' => $this->getMetaTags(),
'subtags' => $this->getSubTags(),
'more' => $this->getMore(),
'excerpts' => $this->getExcerpts(),
'score' => $this->getScore()
];
}

After correction, everything seems OK.

Start with lib/private/FullTextSearch/Model/IndexDocument.php and inspect jsonSerialize() around line 775, then reproduce the failure through the fulltextsearch:live service and compare the related fulltextsearch_elasticsearch issue. Done means the live service no longer crashes when an IndexDocument is serialized and indexing continues without requiring the reported workaround.