Update from 19.0.6 to 20.0.3

i try to update my nextcloud cloud on my sclaway instance.

When i run the updater it’s throw an error in the verifiry integrity section whithout error message. I don’t understand how to fix hit.

Someone can help me ?

I would assume that no-one will be able to help you without PRECISE information on the displayed error and a DETAILED description what you exactly did to run into that error. Furthermore provide DETAILED information about your environment and any related error message from the Nextcloud server log.