Hi,
I just finished my installation, I initialized all my variables and validated. Then I tried to connect as admin/admin but I have only a blank screen. Here is the end of my log file. All the cut part above was the database population (without error).

2023-01-05 11:52:54.312 ===== TRACE ===== =====================================
2023-01-05 11:52:54.312 ===== TRACE =====
2023-01-05 11:52:54.312 ===== TRACE ===== DATABASE UPDATE COMPLETED TO VERSION V10.2.1
2023-01-05 11:52:54.312 ===== TRACE =====
2023-01-05 11:52:54.312 ===== TRACE ===== =====================================
2023-01-05 11:52:54.312 ===== TRACE =====
2023-01-05 11:53:10.520 ----- DEBUG ----- loginCheck : current db version = 'V10.2.1'
2023-01-05 11:53:10.523 ----- DEBUG ----- User->authenticate('admin', 'cf9e488da58d713b4e062639ddea4e5a')
2023-01-05 11:53:10.537 ----- DEBUG ----- User->authenticate : md5 encryption
2023-01-05 11:53:10.537 ----- DEBUG ----- User->authenticate : Successfull login
2023-01-05 11:53:10.583 ===== TRACE ===== NEW CONNECTED USER 'admin'
2023-01-05 11:53:11.597 ** ERROR ** [V10.2.1] ERROR **
2023-01-05 11:53:11.597 ** ERROR ** [V10.2.1] on file '/var/www/html/192.168.205.2/public/external/html2pdf/src/Html2Pdf.php' at line (193)
2023-01-05 11:53:11.597 ** ERROR ***** [V10.2.1] cause = Creation of dynamic property SpipuHtml2PdfHtml2Pdf::$_pdfa is deprecated