Php error: check_virtualhost($check_files_only = *uninitialized*) (1 reply)

Hello...in the list of php errors I repeatedly record the following 2 errors:

Stack trace:
[20-Sep-2023 08:39:45 Europe/Bucharest] PHP 1. {main}() D:\wamp64\scripts\refresh.php:0
[20-Sep-2023 08:39:45 Europe/Bucharest] PHP 2. check_virtualhost($check_files_only = *uninitialized*) D:\wamp64\scripts\refresh.php:250
[20-Sep-2023 08:39:46 Europe/Bucharest] PHP Notice: Undefined index: ServerName in D:\wamp64\scripts\wampserver.lib.php on line 801

[20-Sep-2023 08:39:46 Europe/Bucharest] PHP Stack trace:
[20-Sep-2023 08:39:46 Europe/Bucharest] PHP 1. {main}() D:\wamp64\scripts\refresh.php:0
[20-Sep-2023 08:39:46 Europe/Bucharest] PHP 2. check_virtualhost($check_files_only = *uninitialized*) D:\wamp64\scripts\refresh.php:2288
[20-Sep-2023 08:39:46 Europe/Bucharest] PHP Notice: Undefined index: DocumentRoot in D:\wamp64\scripts\wampserver.lib.php on line 802.

These 2 errors do not visibly affect my server, but they exist and I would like to know if they can be solved somehow.
I mention that the only problem I have with the server is that after a few days the server icon (green) becomes inactive and in order to access the server I have to stop the Aestran service from the task manager and restart the server. Thank you.
PS: I checked the existence of all the vc++ packages and nothing is missing and the configuration is the one in the signature.