Dear PKP Team,
I’ve tried to upgrade PHP from 8.0 to 8.1. I noticed that most of this deprecation messages are related to some plugins and PKP Lib as below:
[17-Feb-2023 18:08:50 Asia/Baghdad] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/plugins/generic/dublinCoreMeta/DublinCoreMetaPlugin.inc.php on line 155
is related to the DublinCoreMetaPlugin.
[17-Feb-2023 18:09:10 Asia/Baghdad] PHP Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/lib/pkp/lib/vendor/smarty/smarty/libs/plugins/modifier.escape.php on line 36
[17-Feb-2023 18:09:17 Asia/Baghdad] PHP Deprecated: stripslashes(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/lib/pkp/classes/citation/Citation.inc.php on line 99
[17-Feb-2023 18:09:17 Asia/Baghdad] PHP Deprecated: stripslashes(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/lib/pkp/classes/citation/Citation.inc.php on line 99
[17-Feb-2023 18:09:17 Asia/Baghdad] PHP Deprecated: stripslashes(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/lib/pkp/classes/citation/Citation.inc.php on line 99
[17-Feb-2023 18:09:17 Asia/Baghdad] PHP Deprecated: stripslashes(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/lib/pkp/classes/citation/Citation.inc.php on line 99
[17-Feb-2023 18:09:17 Asia/Baghdad] PHP Deprecated: stripslashes(): Passing null to parameter #1 ($string) of type string is deprecated in /public_html/lib/pkp/classes/citation/Citation.inc.php on line 99
are related to OJS (PKP Lib).
Many Thanks