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Question: Good evening!when working with website mvfund.org encountered the following error in the admin when entering in some sections the following message appears:ОшибкаUnknown column `a.id` in `where clause` SQL=SELECT COUNT(*) FROM `kelxo_extensions` AS a WHERE `type` = `template` AND a.id != 715 Unknown column `a.id` in `where clause` SQL=SELECT a.extension_id, a.name a.element, a.client_id FROM `kelxo_extensions` AS a WHERE `type` = `template` AND a.id != 715 ORDER BY a.element asc LIMIT 0, 20 Unknown column `a.id` in `where clause` SQL=SELECT COUNT(*) FROM `kelxo_extensions` AS a WHERE `type` = `template` AND a.id != 715Подскажите, please how to fix it
Answer:

Hello. the error howaida that you have no column in the table

what were you doing at

Question: In the fact of the matter is that over the last month have placed about 5 publications. and that`s all. ie codes I have not changed anything, the new components are not installed
Answer:

what engine website? try to restore the database in the panel

Question: joomla 3
Answer:

if your site has been hacked

now check for viruses

Question: well. what do I do?
Answer:

your website is vulnerable.

http://mvfund.org/AI-BOLIT-REPORT-__-617818-28-02-2016_19-35.html

the vulnerability is known since December. we conducted few easy mailing.

you should have fix

https://revisium.com/ru/blog/joomla_rce_all_versions_affected.html

Question: need to replace the file session.php? For the 3rd joomla where can I get it?
Answer:

Download a fresh distro and take it from this file.

Question: well. file replaced. what`s next? to restore the database?
Answer:

Scan the site for viruses and vulnerabilities, and for this vospolzuytes section in Your personal account, \"Check the website for viruses\".


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