Debug error in TinyMCE / dialog.php in CMSMS 2.2.21

[funkyhead]

Hi,
after severals bugs* in TinyMCE when i try to add a PDF file link in a page with TinyMCE : the window was empty or display only one file.

I add this modif in this source :

modules/TinyMCE/responsive_filemanager/filemanager/dialog.php

Line 1197, add of : "?? []"

<?php }elseif(in_array($file_array['extension'],$config['cad_exts'] ?? [])){

After that no more problem.
Thx for your attention.

* with PHP 8.3.19

[DIGI3]

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