Update website settions issues

Using the latest version of ISPconfig3, the website module fails to apply the settings (changing php version).

Output of server.sh:

Code:

10.06.2021-14:37 - WARNING - There is already a lockfile set, but no process running with this pid (20999). Continuing.
PHP Warning:  Undefined array key "template" in /usr/local/ispconfig/server/lib/classes/tpl_ini.inc.php on line 92
PHP Warning:  Trying to access array offset on value of type null in /usr/local/ispconfig/server/lib/classes/tpl_ini.inc.php on line 92
PHP Warning:  Undefined array key "template" in /usr/local/ispconfig/server/lib/classes/tpl_ini.inc.php on line 92
PHP Warning:  Trying to access array offset on value of type null in /usr/local/ispconfig/server/lib/classes/tpl_ini.inc.php on line 92
PHP Warning:  Undefined array key "serverconfig" in /usr/local/ispconfig/server/plugins-available/apache2_plugin.inc.php on line 1846
PHP Warning:  Trying to access array offset on value of type null in /usr/local/ispconfig/server/plugins-available/apache2_plugin.inc.php on line 1846
PHP Warning:  Trying to access array offset on value of type null in /usr/local/ispconfig/server/plugins-available/apache2_plugin.inc.php on line 1846
PHP Fatal error:  Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /usr/local/ispconfig/server/lib/classes/tpl.inc.php(1344) : eval()'d code:621
Stack trace:
#0 /usr/local/ispconfig/server/lib/classes/tpl.inc.php(1344): eval()
#1 /usr/local/ispconfig/server/lib/classes/tpl.inc.php(788): tpl->_parse()
#2 /usr/local/ispconfig/server/plugins-available/apache2_plugin.inc.php(1885): tpl->grab()
#3 /usr/local/ispconfig/server/lib/classes/plugins.inc.php(120): apache2_plugin->update()
#4 /usr/local/ispconfig/server/mods-available/web_module.inc.php(137): plugins->raiseEvent()
#5 /usr/local/ispconfig/server/lib/classes/modules.inc.php(302): web_module->process()
#6 /usr/local/ispconfig/server/lib/classes/modules.inc.php(235): modules->raiseTableHook()
#7 /usr/local/ispconfig/server/server.php(180): modules->processDatalog()
#8 {main}
  thrown in /usr/local/ispconfig/server/lib/classes/tpl.inc.php(1344) : eval()'d code on line 621

I also cannot find the mentioned existing lockfile at all.
Settings are not applyed at all, same server with a older version was working propperly.

 

Thanks for the hind.
Seems that the auto update updated php7.4 to php8.0. Forgot about the missing php8 support for ISPconfig.
Any plans to support php8 in the near future?