Thanks erAck,

So I guess Metadata Open Graph 14.0.a also gives these errors. What's a bit curious is that I get the error even when all plugins are disabled.

Hello ddtddt,

Yes, I have updated to Metadata Open Graph 14.0.a, but errors keep appearing with PHP 8.1 in my PHP error log file. I have already emptied the cache, purged compiled templates and trashed all files in templates_c folder.

The errors only stop when I go back to PHP 7.4 with Piwigo 14.0.

Hi ddtddt,

Yes, in file initadmin.php line 92 I have :

$template->assign('SHOWMOGI', "1");
  }else{
   $template->assign('SHOWMOGI', "0");
  }

and I changed it to :

$template->assign('SHOWMOGI', "1");
  }else{
   $template->assign('SHOWMOGI', "?");
  }

But I still get the following error:

Undefined array key "SHOWMOGI" in /_data/templates_c/p6jhns^14fa551f995c229031db643b81ce50a63c8802ee_0.file.mog_adminphoto.tpl.php on line 121
[21-Dec-2023 14:38:46 UTC] PHP Warning:  Attempt to read property "value" on null in /_data/templates_c/p6jhns^14fa551f995c229031db643b81ce50a63c8802ee_0.file.mog_adminphoto.tpl.php on line 121
[21-Dec-2023 14:38:47 UTC] PHP Warning:  Undefined array key "SHOWMOGI" in /_data/templates_c/p6jhns^14fa551f995c229031db643b81ce50a63c8802ee_0.file.mog_adminphoto.tpl.php on line 121
[21-Dec-2023 14:38:47 UTC] PHP Warning:  Attempt to read property "value" on null in /_data/templates_c/p6jhns^14fa551f995c229031db643b81ce50a63c8802ee_0.file.mog_adminphoto.tpl.php on line 121

Here is line 121:

<?php if (($_smarty_tpl->tpl_vars['SHOWMOGI']->value == 1)) {?>
    <span style="margin: 0 0 0 20px"><?php echo l10n('Metadata Open Graph link image');?>
</span>

Hi :-)

in file mog_adminphoto.tpl can you replace line 76

  {if ($SHOWMOGI==1)}

by

  {if isset($metagestion) and ($SHOWMOGI==1)}