<div dir="ltr"><div>Hi Daniel,</div><div><br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
\title{My awesome book}<br>
\author{Daniel Cerqueira S.}<br>
\date{August 2024}<br>
<br>
(...)<br></blockquote><div><br></div><div>Do you have \maketitle in your document? Without it, metadata is not saved. If you have \maketitle, could you make a MWE that shows this error? It can be caused by the document class or some package.</div><div><br></div><div>Best regards,</div><div>Michal<br></div></div></div>