the codesign_allocate helper tool 怎么安装？

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

/var/folders/15/0vnmb2j91jn0ywqpmgrd75s80000gn/T/TemporaryItems/NSIRD_自动操作_0hnRvK/未命名.app: the codesign_allocate helper tool cannot be found or used