help Sequoia on macbook pro a1708

i always get this

Failed to create macOS installer

Output: Started erase on disk5

Unmounting disk

Creating the partition map

Waiting for partitions to activate

Formatting disk5s2 as Mac OS Extended with name OCLP-Installer

Initialized /dev/rdisk5s2 as a 465 GB case-insensitive HFS Plus volume

Mounting disk

Finished erase on disk5

Copying essential files...

Error: Erasing disk: 0%... 10%... 20%... 30%... 100%

Failed to write .IAPhysicalMedia cookie to disk. Error Domain=NSCocoaErrorDomain Code=513 "Du hast nicht die Zugriffsrechte, um die Datei „.IAPhysicalMedia“ im Ordner „Install macOS Sequoia“ zu sichern." UserInfo={NSFilePath=/Volumes/Install macOS Sequoia/.IAPhysicalMedia, NSUserStringVariant=Folder, NSUnderlyingError=0x6000017c3570 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}}

The bless of the installer disk failed.