Hi there,

Seeing from the error it seems like it not generated by easyblog components. Can you provide us with your Joomla backend and FTP access so we can confirm this?

What surprise me is that the error is associated with an easyblog logon and I nevers logon from the front end.

This issue has nothing to do with our extensions at all and it was because of a faulty upgrade for your Joomla site Refer to the thread at https://github.com/joomla/joomla-cms/issues/5953

To fix this, you need to run the following SQL query on the site

ALTER TABLE `#__redirect_links` ADD header smallint(3) NOT NULL DEFAULT 301;
ALTER TABLE `#__redirect_links` MODIFY new_url varchar(255);