Need help

Can’t get the file to copy to the flash drive I get this error message

Error Failed to create macOS installer Output: Started erase on disk4 Unmounting disk Creating the partition map Waiting for partitions to activate Formatting disk4s2 as Mac OS Extended with name OCLP-Installer Initialized /dev/rdisk4s2 as a 29 GB case-insensitive HFS Plus volume Mounting disk Finished erase on disk4 Copying essential files... Error: Erasing disk: 0%... 10%... 20%... 30%... 100% Failed to write IAPhysicalMedia cookie to disk. Error Domain=NSCocoaErrorDomain Code=513 "You don't have permission to save the file "IAPhysicalMedia" in the folder "Install macOS Sequoia"." Userinfo={NSURL=file:///Volumes/ Install%20macOS%20Sequoia/.IAPhysicalMedia, NSUnderlyingError=0x60000097bd80 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}, NSUserStringVariant=Folder, NSFilePath=/Volumes/Install macOS Sequoia/.IAPhysicalMedia) The bless of the installer disk failed. OK