Error from Custom Tag under ADMINISTRATION TAB in 19.2


I am testing 19.2 with SQL Server 2017 Developer Edition before the roll out in my live server. But, every time when any user clicks on the "Custom Tag" under the "TEMPLATES" menu in the "ADMINISTRATION" tab, this throws different error to different user. Please see the attached screenshot for details.


Anyone having any idea on this, kindly help me.

We are using latest versions of both the browsers - Google Chrome & Firefox.