Error “Cannot read contents from file..” when changing themes from admin panel

Please copy the folder

<span class="pln">\vendor\magento\module</span><span class="pun">-</span><span class="pln">email\view\frontend\email</span>

1	<span class="pln">\vendor\magento\module</span><span class="pun">-</span><span class="pln">email\view\frontend\email</span>

<span class="pln">\vendor\magento\module</span><span class="pun">-</span><span class="pln">email\view\adminhtml\email\.</span>

1	<span class="pln">\vendor\magento\module</span><span class="pun">-</span><span class="pln">email\view\adminhtml\email\.</span>