Please format your code to make it readable. This is your code correctly reformatted.

for (my $i = 1 ;$i <=8; $i++) { 
    open (MYFILE,"server$i"); 
    while (<MYFILE>) { 
        chomp; 
        my @values = split " ",$_; 
        push @{ "table$i"},\@values;
    }
}
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In short, you are using symbolic references, which was right 15 years ago, but is deprecated and probably wrong today.