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Where's my site gone?

Posted: Wed Jun 26, 2019 1:50 pm
by Hosteller

Yesterday I logged into my site for the first time in about five months and was asked (I think) if I'd like to upload and install the latest version of Joomla.
A green progress appeared across the screen but it stuck at about 80%, and after ten minutes or so I refreshed the screen.
The site - and the admin site - both disappeared and all I have is a white screen with "Failed to start application: Class 'Joomla\CMS\Session\MetadataManager' not found".
I have absolutely no idea what to do now, and the hosting supplier can't or won't help either.
I'd be really, really grateful for a lifeline!

Thank you very much.

Re: Where's my site gone?

Posted: Wed Jun 26, 2019 5:52 pm
by creativesights
Ask the host to restore a backup.

If they can't or won't. You could upload a clean joomla file structure via FTP and overwrite the existing files - everything except the installation files.

You should use the Forum Post Assistant to tell everyone more about what's going on with your site. - viewtopic.php?f=806&t=969442

Re: Where's my site gone?

Posted: Sat Jun 29, 2019 6:07 pm
by abernyte
Your site is showing properly but is reported as having a malware infection. ...

Follow the instructions here: viewtopic.php?f=714&t=946026 or hire a professional, will give you the initial scan for free.