Blank page after login with Magento Connect Manager

[drillsar12]

Delete those logs; also delete the /var/cache folder and /var/session folders. Than go to Magento Connect Manager see if it will create a new log

[chip13]

My installation is on a shared server, how can I know if I have SSH access ?

Magento Compiler is marked "disabled", then compiled "compilation" state. Should I modify something ?

I deleted the logs, as well as the "cache" and "session" files (I have a cron spot, which deletes the session files at the beginning of each month). The blank page problem is still there. I only have the "system.log" log that was generated. Here's what it contains:

2017-01-11T17:49:39+00:00 ERR (3): Warning: SimpleXMLElement::__construct(): Entity: line 6: parser error : Opening and ending tag mismatch: hr line 5 and body  in /var/www/vhosts/MY-SITE/httpdocs/app/code/core/Mage/AdminNotification/Model/Feed.php on line 173
2017-01-11T17:49:39+00:00 ERR (3): Warning: SimpleXMLElement::__construct(): </body>  in /var/www/vhosts/MY-SITE/httpdocs/app/code/core/Mage/AdminNotification/Model/Feed.php on line 173
2017-01-11T17:49:39+00:00 ERR (3): Warning: SimpleXMLElement::__construct():        ^  in /var/www/vhosts/MY-SITE/httpdocs/app/code/core/Mage/AdminNotification/Model/Feed.php on line 173
2017-01-11T17:49:39+00:00 ERR (3): Warning: SimpleXMLElement::__construct(): Entity: line 7: parser error : Opening and ending tag mismatch: body line 3 and html  in /var/www/vhosts/MY-SITE/httpdocs/app/code/core/Mage/AdminNotification/Model/Feed.php on line 173
2017-01-11T17:49:39+00:00 ERR (3): Warning: SimpleXMLElement::__construct(): Entity: line 7: parser error : Premature end of data in tag html line 1  in /var/www/vhosts/MY-SITE/httpdocs/app/code/core/Mage/AdminNotification/Model/Feed.php on line 173

Thanks

[drillsar12]

what Php version you using? I would contact your host and see if you can get SSH acess; it's kind of critical to have for Magento

[drillsar12]

haha it looks like

 something is breaking the adminhtml feed module.

The cause could be a third-party module that is retrieving invalid XML.

Check whether your site code contains any class which extends Mage_AdminNotification_Model_Feed.

you need to find out what module is causing that and a ton easier to find with SSH access.

[drillsar12]

you can also try it manually, but way more complicated.

got to /app/etc/modules and see what modules in your store; try disabling them one by one and delete your logs; cache and see if error disappears.

With SSH you can use grep command to do a search on what modules is calling that and disabling that module.

[chip13]

The PHP version of my server is 5.3.29
My hosting company is a French company and because I am in France.

I tried to disable all the plugins, then deleted the cache files, and the log "system.log", but the blank page is still there.

The new "system.log" log generated has the same content as the old one

[drillsar12]

what version of Magento? if this is 1.9 you need at least PHP 5.4 prefered 5.6; Most hosts you will be able to change php version.

[chip13]

My version of Magento is 1.9.3.1

[drillsar12]

I would change the PHP version to 5.6 and see if that helps.

[chip13]

I will ask my host if it is possible to make the change.