XF 2.2 Upgrade crashed, site not accessible

Frode789

Well-known member
Tried to upgrade via control panel to latest update (I was already on 2.2 branch, I think it was 2.2.3), but upgrade crashed with the following details:

"
An exception occurred: [Error] Call to undefined method XF\ComposerAutoload::checkPaths() in src/XF.php on line 287
  1. XF::registerComposerAutoloadDir() in src/XF/App.php at line 2334
  2. XF\App->setupAddOnComposerAutoload() in src/XF/Install/App.php at line 160
  3. XF\Install\App->setup() in src/XF.php at line 485
  4. XF::setupApp() in src/XF/Install/_upgrader/core.php at line 1184
  5. XFUpgraderWeb::create() in install/oc-upgrader.php at line 13
"

Site is not accessible now, "The site is currently being upgraded. Please check back later."
 
Solution
It looks like some files failed to copy.

Download the zip archive from your customer account, extract and upload the files then you should be able to resume the upgrade via /install.
It looks like some files failed to copy.

Download the zip archive from your customer account, extract and upload the files then you should be able to resume the upgrade via /install.
 
Solution
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