vue2.6.14 element ui2.15.14版本 使用el-table报错

Cannot read properties of undefined (reading 'toUpperCase')
at getCell (element-ui.common.js:10044:31)
at VueComponent.handleEvent (element-ui.common.js:12114:18)

var getCell = function getCell(event) {
var cell = event.target;

while (cell && cell.tagName.toUpperCase() !== 'HTML') {
if (cell.tagName.toUpperCase() === 'TD') {
return cell;
}
cell = cell.parentNode;
}

return null;
};

handleEvent: function handleEvent(event, row, name) {
var table = this.table;
var cell = getCell(event);
var column = void 0;
if (cell) {
column = getColumnByCell(table, cell);
if (column) {
table.$emit('cell-' + name, row, column, cell, event);
}
}
table.$emit('row-' + name, row, column, event);
},
一直循环报错