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sub wait_until_xpath(){
  my $xpath=shift;
...
    };
    warn "wait_until_xpath(): timeout at retry #$retries" if 0 > $retr
+ies;
}

sub wait_until_xpath(){
  eval{
...
    warn "wait_until_xpath(): timeout at retry #$retries" if 0 > $retr
+ies;
   }
}