Warning: Undefined array key "XXX" in at_core_preprocess_region() [#3371209]

Problem/Motivation

AdaptiveTheme 8.x-5.1
Core: 9.5.9
php: 8.0.20

Warning: Undefined array key "header" in at_core_preprocess_region() (line 393 of themes/contrib/adaptivetheme/at_core/includes/preprocess.inc).
Warning: Undefined array key "content" in at_core_preprocess_region() (line 393 of themes/contrib/adaptivetheme/at_core/includes/preprocess.inc).
Warning: Undefined array key "footer" in at_core_preprocess_region() (line 393 of themes/contrib/adaptivetheme/at_core/includes/preprocess.inc).

Comment	File	Size	Author
#4	undefined-array-key-xxx-3371209-4.patch	807 bytes	air xiang
#2	undefined-array-key-xxx-3371209-1.patch	988 bytes	air xiang

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