Warnings after upgrade to 2023-04-04a "Jack Jackrum"

[FlyveHest]

Description

Lots of E_WARNINGS in log

Related to #596 (I got the same error during upgrade)

Looks like the template is using functionality that has been deprecated in DokuWiki.

Steps to reproduce

1. Run DokuWiki 2023-04-04a "Jack Jackrum"
2. Load a page
3. Check log

Expected behavior: Nothing out of the ordinary

Actual behavior: Lots of these warnings in log

2023-06-26 08:51:28 E_WARNING: Undefined array key 1 .../inc/Debug/DebugHelper.php(89)
    #0 .../inc/Debug/DebugHelper.php(89): dokuwiki\ErrorHandler::errorHandler()
    #1 .../inc/Debug/PropertyDeprecationHelper.php(83): dokuwiki\Debug\DebugHelper::dbgDeprecatedProperty()
    #2 .../lib/tpl/bootstrap3/iconify.php(82): dokuwiki\Cache\Cache->__set()
    #3 {main}

2023-06-26 08:51:28 E_WARNING: Trying to access array offset on value of type null .../inc/Debug/DebugHelper.php(90)
    #0 .../inc/Debug/DebugHelper.php(90): dokuwiki\ErrorHandler::errorHandler()
    #1 .../inc/Debug/PropertyDeprecationHelper.php(83): dokuwiki\Debug\DebugHelper::dbgDeprecatedProperty()
    #2 .../lib/tpl/bootstrap3/iconify.php(82): dokuwiki\Cache\Cache->__set()
    #3 {main}

Versions

• Bootstrap3 Template, latest version
• 2023-04-04a "Jack Jackrum"
• PHP8.1