Random, Suspicious URLs in Admin CP (Plugins)

[Metalwarrior]

I started seeing this as soon as I uninstalled Yaldaram's Fake Users Online v0.3 plugin, which was beyond my control to maintain. What a terrible "premium" plugin.
   
Now, how do I remove the highlighted error? Many thanks.

[dylanhart]

Going to need a lot more than a screenshot that looks like a classified CIA document to assess what's going on.

[Beautiful]

Im using the same plugin never seen this