Update: https://knowledge.broadcom.com/external/article/185809/
Right now this is occurring at the point of installation utilizing SEPS version 14.2_RU2 on Catalina Machines.
(My Environment is Catalina Only, Haven't tested on older OS)
So test your deployment / symantec installations out to see if you get this.
It is flagged at a temporary location
/private/tmp/PKInstallSandbox.0Ugi1z/Scripts/com.remote.deploy.uQRXrO/UninstallerTool
You cannot get past the screen until you remove the UninstallerTool.
I believe we must update the package installer & update all current machines by March 30th.
No official documentation (as far as I know) from Symantec / Broadcom.
Matt on slack provided his workaround : https://macadmins.slack.com/archives/C09MMQVH6/p1583914412251600?thread_ts=1582931159.076000&cid=C09MMQVH6