ToC hyperlink to biblatex bibliography is not working for a specific class

I am using the fphw.cls (gitlab link) class for my assignment template.
But I have found that the hyperlink on my ToC to bibliography is not properly working. When I click on the bibliography section at my ToC (on PDF), it takes to the previous page of the bibliography. The problem is appearing only in the bibliography. The other hyper-references are working okay.

Here’s my MWE:

documentclass{fphw}    % Link to the fphw.cls file: https://gitlab.com/fportales/fphw/-/blob/master/fphw.cls
usepackage[sorting=none]{biblatex} 
usepackage[
     hidelinks,              % for removing the borders around clickable cross-references and hyperlinks 
     bookmarksopen,          % for PDF specific display option
     bookmarksnumbered,      % for PDF specific display option
]{hyperref}
usepackage{bookmark}        % A new bookmark (outline) organization for hyperref
usepackage{lipsum}

title{ToC to Bibliography Problem}
addbibresource{ref_qm.bib} 
begin{document}
pdfbookmark[section]{contentsname}{toc}
tableofcontents
newpage
section{section name}
lipsum[1][5]cite{book:griffiths}  lipsum
section{section name}
lipsum[2][5]cite{book:balakrishnan}  lipsum 
newpage
printbibliography[heading=bibintoc]
end{document}

How can I solve the issue?
The fphw.cls file contains 126 lines of codes. That’s why I haven’t put it here. Kindly check the link.

phantomsectionprintbibliography