The 'writer' setting for '\PhpOffice\PhpSpreadsheet\Spreadsheet' must be setup in 'exportConfig'.

[ebs-av]

composer update to v 1.4.2:
code used:
echo ExportMenu::widget([
'dataProvider' => $dataProvider,
'filterModel' => $searchModel,
'columns' => $gridColumns,
'filename' => 'Users Report Export '.date('d-M-Y'),
'exportConfig' => [
ExportMenu::FORMAT_HTML => [
'label' => 'HTML',
'icon' => 'floppy-saved',
'iconOptions' => ['class' => 'text-info'],
'linkOptions' => [],
'options' => ['title' => 'Hyper Text Markup Language'],
'alertMsg' => 'The HTML export file will be generated for download.',
'mime' => 'text/html',
'extension' => 'html',
'writer' => ExportMenu::FORMAT_HTML
],

but i am getting the error of writer not set on the config

[kartik-v]

Need to check - cannot reproduce currently - can you try by not setting the key exportConfig['writer'] and let know if it works fine.

[ebs-av]

this error happened after the composer update to version 1.4.2...
the code i had was without config at all and was giving that error.. i tried to set the config manually per type ... but still not working.
IS THERE A WAY TO SET THE CONFIG NOT REQUIRED ???

[japel]

I am having the same problem with 1.4.2 @kartik-v any advice what could be done?