Trying to get property of non-object

<?php foreach ($feedbacks as $key => $feed): ?>
<tr>
<td><?= $key+1 ?></td>
<td><?= $feed->type ?></td>
<td><?= $feed->content ?></td>
<td><?= $feed->contact?></td>
<td><?= date('Y-m-d H:i:s',$feed->created_at) ?></td>
<td><?= $feed->feedbackreply->content?></td>

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