Call to undefined method Grav\Plugin\AdminPlugin::shouldLoadAdditionalFilesInBackground

[benface]

After updating to v1.5.0-rc.3, I am getting this on every page of the admin panel:

Fatal error:  Uncaught Error: Call to undefined method Grav\Plugin\AdminPlugin::shouldLoadAdditionalFilesInBackground

Removing this block of code fixes it: https://github.com/getgrav/grav-plugin-admin/blob/develop/admin.php#L528

[OleVik]

A quick search reveals that the problem is where the method is called from: Its not in Grav\Plugin\AdminPlugin, but in Grav\Plugin\Admin\Admin.

[rhukster]

Please try the fix in develop:

            if ($this->admin->shouldLoadAdditionalFilesInBackground()) {
                $this->admin->loadAdditionalFilesInBackground();
            }