Error upgrading to XF 2.2.7 Patch 1

[Sim]

Tried to run the auto-updater to XF 2.2.7 Patch 1 and received the following errors on several of my sites:

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...

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