Search notes:

C:\Users\username\VirtualBox VMs

The subdirectories of C:\Users\username\VirtualBox VMs seem to correspond to VirtualBox guests.

Among others, these subdirectories contain

hard-drive.vdi
<vmname>.vbox
<vmname>.nvram
Logs\VBox.log
‥VBOXPOST.CMD (which seems to be a (modified?) copy of → Windows/dirs/Program-Files/Oracle/VirtualBox/UnattendedTemplates/win_postinstall_cmd)
‥autounattend.xml (which seems to be a (modified?) copy of → Windows/dirs/Program-Files/Oracle/VirtualBox/UnattendedTemplates/win_nt6_unattended_xml)

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:51 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(51): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(66): id_of(Object(PDO), 'uri', '/notes/Windows/...') #2 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Windows/...', 1788290547, '216.73.217.21', 'Mozilla/5.0 App...', NULL) #3 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/dirs/Users/username/VirtualBox-VMs/index(40): insert_webrequest() #4 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 51