I have Xcode 16.4 and want to upgrade to Xcode26 on a MacBookPro with Intel and macOS 26.0. However I keep getting the error message (in German), that the download of the App is not possible, Xcode could not be installed and I should try later. I tried to restart the Mac, close all Apps etc. I tried it meanwhile several times, but still no success. Any Idea what I could try or do to solve the problem? Thx in advance