This site says Chrome Updater is the cause of the problem: https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlink-on-non-sip-macs-causing-boot-

This site says Chrome Updater is the cause of the problem: https://mrmacintosh.com/google-chrome-keystone-is-modifying-var-symlink-on-non-sip-macs-causing-boot-issues/ https://mrmacintosh.com/google-chrome-keystone-is-modifying-... It only happens on Macs with SIP disabled, which includes a lot of Mac Pros with Avid (for third-party video card support)