How do you mean this error?

[kh99]

It won't hurt anything if you leave it as is. But if you really want the message to go away, edit the file and change line 6988 like this (part in red added):

if (is_array($server) AND strpos($server['name'], $server_name))

There's probably a better way to fix it, but this seems like the best way to do it without completely understanding what the function is doing.