Not sure when it started, because I have a cron job to rebuild index, but now I`m getting
Started rebuilding index...
PHP Warning: Invalid argument supplied for foreach() in /var/www/html/lib/wiki/wikilib.php on line 106
PHP Warning: Invalid argument supplied for foreach() in /var/www/html/lib/core/Search/GlobalSource/FreeTagSource.php on line 49
I`m sure it has something to do with trackers, because if I delete all trackers, it stops happening. Also if I disable trackers.
I think it started when I changed this feature: (Format to use for tracker field keys) to Field ID (backward compatibility mode with Tiki 7 and 8). But it didn`t fix just changing it back.