Filehandle INFO opened only for input at ...
    (W io) You tried to write on a read-only filehandle.  If you intended
    it to be a read-write filehandle, you needed to open it with "+<" or
    "+>" or "+>>" instead of with "<" or nothing.  If you intended only to
    write the file, use ">" or ">>".  See perlfunc/open.