I run Dokuwiki on Debian 12 (bookworm), with all updates in place on Apache2 (v2.4.57) and PHP8.2. My Dokuwiki' s version is 2023-04-04a "Jack Jackrum" (according to file VERSION).
Log file /var/log/apache2/error.log repeatedly shows two error messages:
2023-11-17 09:18:44.420843] [php:warn] IPv4_ADDRESS:56085 ZVch5Ah7JxfRxlhwB7P5QwAAAAQ PHP Warning: Trying to access array offset on value of type null in /var/www/html/dokuwiki/inc/Debug/DebugHelper.php on line 66
[2023-11-17 09:18:44.421221] [php:warn] IPv4_ADDRESS:56091 ZVch5KtYPd4oqa6jeUQI-wAAAAI PHP Warning: Undefined array key 1 in /var/www/html/dokuwiki/inc/Debug/DebugHelper.php on line 89`
"ls -la /var/www/html/dokuwiki/inc/Debug/DebugHelper.php" shows:
-rw-r--r-- 1 www-data www-data 5393 2023-05-15 19:13 /var/www/html/dokuwiki/inc/Debug/DebugHelper.php
It seems to me that the code in Dokuwiki's PHP file needs to be modified; I do NOT encounter a similar error message with NextCloud on the same computer.
Can somebody point me to a solution, please?
Best regards
Dieter
