Попробуйте это. Вы должны установить wkhtmltopdf для windows с composer.
composer require wemersonjanuario/wkhtmltopdf-windows
'pdf' => array(
'enabled' => true,
'binary' => base_path('vendor/wemersonjanuario/wkhtmltopdf-windows/bin/64bit/wkhtmltopdf.exe'),
'timeout' => false,
'options' => array(),
'env' => array(),
),
'image' => array(
'enabled' => true,
'binary' => base_path('vendor/wemersonjanuario/wkhtmltopdf-windows/bin/64bit/wkhtmltoimage.exe'),
'timeout' => false,
'options' => array(),
'env' => array(),
),