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Issue Unable to locate package aum

jl07

New Pleskian
Error when changing ModSecurity to Atomic Advanced
E: Unable to locate package aum

Plesk and OS details below:
Product version: Plesk Obsidian 18.0.30.2
OS version: Ubuntu 18.04 x86_64
 
As far as I know, Atomic developers are working on this issue right now.
The time on this will be within the next couple of weeks.

With that said my recommendation would be to use Comodo rule set for servers deployments: it is the default since Obsidian as we at Plesk find it more stable.
 
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