Consistent get this went trying to download the mobile profile for WatchOS 8.0 beta 5.
'cannot decode raw data' when attempting to download mobile profile
reported same problem trying to download Xcode 13 beta 5
Same problem! XCode locked download in Appstore unable to even force close with com, opt + click or Force Close in HW monitor. Can't find page in Brave (chrome) or Safari after DEV login authorized. MB Pro seems fine 14:05 8/13/21 MacOS Bich Sur 11.5.1 Mac 15,1 4ghz i7 R9 M295X 4
Getting a similar error when trying to download Xcode 13 beta 5 for my Mac (M1 running 12.0 Beta (21A5304g)) today (2021-08-13):
"https://download.developer.apple.com/Developer_Tools/Xcode_13_beta_5/Xcode_13_beta_5.xip". The error is: "cannot decode raw data" (NSURLErrorDomain:-1015)