description
In ZSS 3.9.1, the header of the dialog displayed is title "warn".
A more correct title would be "warning"
https://github.com/zkoss/zkspreadsheet/blob/c0bb5bf51d340726158ab62add28b58d3c285028/zss/src/archive/metainfo/zk-label.properties#L2
Steps to reproduce:
type an invalid function in spreasheet:
ex : =A( then press enter.