I did an update for a customer project from Pimcore 5.1 to 5.1.3

During the update a popup comes up with this message.

The update failed. Furthermore the pimcore installation was more or less destroyed.
The only solution was the installation of the last backup.

Pimcore 5.1 was a standard installation an no update from pimcore 4

Cheers
Markus

(1/1) ClassNotFoundException Attempted to load class "PrestaSitemapBundle" from namespace "Presta\SitemapBundle". Did you forget a "use" statement for another namespace?

in Kernel.php (line 253)
at Kernel->registerCoreBundlesToCollection(object(BundleCollection))in Kernel.php (line 196)
at Kernel->registerBundles()in Kernel.php (line 494)
at Kernel->initializeBundles()in Kernel.php (line 134)
at Kernel->boot()in Kernel.php (line 160)
at Kernel->boot()in kernel.php (line 25)
at require_once('/var/www/vhosts/localhost.localdomain/httpdocs/pimcore/config/kernel.php')in app.php (line 50)