Install of vt7.4.0 on php7.4

All seems to install OK. And there are only a very few php notices/warnings:

[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 18
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 19
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 20
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 21
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 22
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 23
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 24
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 25
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 26
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 27
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 28
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 29
[07-Aug-2021 11:15:37 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/modules/CustomView/CustomView.php on line 30

[07-Aug-2021 11:15:39 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/include/database/PearDatabase.php on line 863
[07-Aug-2021 11:15:39 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/include/database/PearDatabase.php on line 864
[07-Aug-2021 11:15:39 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/include/database/PearDatabase.php on line 865
[07-Aug-2021 11:15:39 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/include/database/PearDatabase.php on line 866
[07-Aug-2021 11:15:39 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/include/database/PearDatabase.php on line 867
[07-Aug-2021 11:15:39 Europe/London] PHP Notice:  Trying to access array offset on value of type null in /var/www/html/vtiger/include/database/PearDatabase.php on line 869

[07-Aug-2021 11:15:39 Europe/London] PHP Warning:  A non-numeric value encountered in /var/www/html/vtiger/modules/Install/models/ConfigFileUtils.php on line 104