Error message about addon modifying chat channel about greenwall

[mrogaski]

11:02:56 [Bazhha]: C#fidelis##least its semi-slow at work so I can watch guild chat and be happy
11:03:27 [Trenin]: A#fortuna##%s has earned the achievement [Forgotten Depths]!
11:03:41 [Samaur]: A#pondera##%s has earned the achievement [Molten Core]!
11:04:04 [Bazhha]: C#fidelis##I almost wonder if I should have xfered my druid here too
11:04:07 [Kaopao]: A#pondera##%s has earned the achievement [Accelerated Archaeology]!
11:04:22 [Stingger]: A#invictus##%s has earned the achievement [Shado-Pan]!
11:05:01 [Mayberry]: C#verendus##(Darkkat): half price through today
11:05:14 [Monski]: A#fidelis##%s has earned the achievement [Battle on the High Seas]!
11:05:33 [Zyndarra]: A#gravitas##%s has earned the achievement [Last Stand of the Zandalari]!
11:05:38 [Swordarm]: A#verendus##%s has earned the achievement [Battle for Gilneas Victory]!
11:05:38 [Gigaus]: A#gravitas##%s has earned the achievement [Battle for Gilneas Victory]!
11:05:56 [Saxen]: C#fidelis##(Main): Heres probably a noob question, what does  [Blood Spirit] do?
11:06:05 [Tetsemi]: A#audacia##%s has earned the achievement [Taming the World]!
11:06:05 [Tetsemi]: A#audacia##%s has earned the achievement [Time to Open a Pet Store]!
11:06:18 [Aboal]: C#libertas##[Abovan] Crafting, 496 gear
11:06:19 [Cano]: A#gravitas##%s has earned the achievement [Treasure of Pandaria]!
11:06:36 [Saxen]: C#fidelis##(Main): Gotcha, ty
11:06:46 [Lethalburito]: A#pondera##%s has earned the achievement [5 Daily Quests Complete]!
11:07:15 [Umbretta]: A#verendus##%s has earned the achievement [Newbie]!
11:07:15 [Nomilkforme]: C#comitas##[kerosenekid] welcome
11:07:21 [Bazhha]: C#fidelis##got no money till thursday, I hate bills + cost of living + bills XD
11:07:27 [Nagratz]: C#comitas##Welcome Sakaarson!
11:07:28 [Dribbler]: B#comitas##promote:Sakaarson:Cohort