if (empty($cl[$col_cfg['dataIndex']])) {
continue;
}
- if (isset($col_cfg['renderer'])) {
+ if (!empty($col_cfg['renderer'])) {
if (is_a($col_cfg['renderer'], 'Closure')) {
$col_cfg['renderer']->call($this, $cl[$col_cfg['dataIndex']], $worksheet, $r+1, $c, $cl);