There are statistics, how many people updated to the version of Kaspersky Internet Security 188.8.131.525(d) that was in September 2019? (according to these data https://github.com/aws-amplify/amplify-js/issues/3985)
I ask, since there is still a problem in February 2020: https://enota.club/threads/bag-v-skripte-kasperskogo-main-js-kotoryj-lomaet-sajty-kis-ns-getcommandsrc.1547/
ns.GetCommandSrc is not a function
The scale of the bug is interesting, how quickly did you fix it and how many people installed it?