Hello,

Subject says all

  Environment
Piwigo 15.5.0 Check for upgrade
Installed on 21 June 2016, 8 years 9 months 3 weeks 2 days ago
Operating system: Linux
PHP: 8.0.30 (Show info) [2025-04-15 11:38:54]
MySQL: 8.0.37 [2025-04-15 12:38:54]
Graphics Library: ImageMagick ImageMagick 6.9.13-25
Cache size 3034.16 Mo   calculated 6 days ago Refresh
  Activated plugin list16
Admin Tools
Comments on Albums
Download Counter
Edit Filename
Exif View
Image Preview
Language Switch
LocalFiles Editor
Mobile Theme for Tablets
OpenStreetMap
pdf2tab
Photo Update
PHP Captcha for Piwigo
RV Akismet
Take A Tour of Your Piwigo
Theme Switch

Piwigo URL: https://swanlandheritage.info/piwigo/

Here are the warning / errors ...

Warning:  [mysql error 1048] Column 'object_id' cannot be null

INSERT  INTO `piwimi_activity`
  (`object`,`object_id`,`action`,`performed_by`,`session_idx`,`ip_address`,`details`,`user_agent`)
  VALUES('user',NULL,'logout',NULL,'cdb93aee50f3cd300f289f3e9a27199f','5.198.94.147','a:1:{s:6:\"script\";s:5:\"index\";}',NULL) in /home/swanland/public_html/piwigo/include/dblayer/functions_mysqli.inc.php on line 847


Warning: Cannot modify header information - headers already sent by (output started at /home/swanland/public_html/piwigo/include/dblayer/functions_mysqli.inc.php:846) in /home/swanland/public_html/piwigo/include/functions_user.inc.php on line 1311

Warning: Cannot modify header information - headers already sent by (output started at /home/swanland/public_html/piwigo/include/dblayer/functions_mysqli.inc.php:846) in /home/swanland/public_html/piwigo/include/functions_user.inc.php on line 1313

Warning: Cannot modify header information - headers already sent by (output started at /home/swanland/public_html/piwigo/include/dblayer/functions_mysqli.inc.php:846) in /home/swanland/public_html/piwigo/include/page_header.php on line 99

Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /home/swanland/public_html/piwigo/plugins/AdminTools/include/events.inc.php:34 Stack trace: #0 /home/swanland/public_html/piwigo/include/functions_plugins.inc.php(264): admintools_add_public_controller() #1 /home/swanland/public_html/piwigo/include/page_header.php(102): trigger_notify('loc_after_page_...') #2 /home/swanland/public_html/piwigo/include/functions.inc.php(1069): include('/home/swanland/...') #3 /home/swanland/public_html/piwigo/include/functions.inc.php(1105): redirect_html('/piwigo/', 'Redirection...', 0) #4 /home/swanland/public_html/piwigo/include/user.inc.php(17): redirect('/piwigo/') #5 /home/swanland/public_html/piwigo/include/common.inc.php(202): include('/home/swanland/...') #6 /home/swanland/public_html/piwigo/index.php(11): include_once('/home/swanland/...') #7 {main} thrown in /home/swanland/public_html/piwigo/plugins/AdminTools/include/events.inc.php on line 34


End of messages from Piwigo