The target_guid is relatively new column in the table, so most plugins don't use it for anything (yet?). Therefore it is empty in most cases.
In case you want to filter specifically with container_guid of the river object, you can... view reply
As a workaround for the MySQL incompatibility, you can simply revert the ONLY_FULL_GROUP_BY settings back to the behavior it had in previous versions on MySQL:
SET GLOBAL sql_mode=(SELECT... view reply
I fixed this in my own environment a couple of days ago, but I don't remember what exactly I did.
Try removing the composer asset plugin first:
composer global remove fxp/composer-asset-plugin
sudo composer self-update
composer global... view reply
There is no exact date, but I believe it's been agreed that Elgg 1.12 will keep receiving security fixes until Elgg 4 gets released.
Support for normal bug fixes will end much earlier, though. And additionally it will be more... view reply
Elgg 2 core does not provide much gains for end users. That's what plugins are for.
However, for developers Elgg core is a tool. When a developer compares Elgg 1 and 2, it looks as if Elgg 1 is a manually operated hand drill... view reply
The mentions plugin supports this out of the box. The feature is just a big buggy on some editors. For example on CKEditor, the current implementation works only with the first paragraph of the content. view reply