HI, Guys.
I apologize for letting you wait. Here is how it should be fixed:
You need to add a missing column "type" Char(50) in table #__community_chat. You'll need to use MyPHPadmin.
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Use option insert:
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Fill fields like this:
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and hit SAVE.
HI, Gustavo.
Repeat above steps but call column "name".
HI, Gustavo.
Again, repeat steps for that column. Finally you should have this:
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Instead Char(50) you should have init(11) - just like on printscreen.
Those columns are present in 4.4.x - for some reason they weren't created in your database.