After this issue implementation, i try to create a new virtual machine, with follow steps:

• new
• select name/type/version
• set memory
• create hard disk (vdi)
• dynamically allocated
  and then

There was an error obtaining the list of registered virtual machines from VirtualBox. Make sure vboxwebsrv is running and that the settings in config.php are correct.

The list of virtual machines will not begin auto-refreshing again until this page is reloaded.

HTTP error: 500 error

On details:

readyState: "4"
responseText: ""
status: "500"
statusText: "error"

Nginx error:

thrown in /var/www/virtualbox/endpoints/lib/vboxServiceWrappers.php on line 1544" while reading response header from upstream, client: xx.xx.xx.xx, server: xx.xx.xx, request: "POST /endpoints/api.php HTTP/2.0", upstream: "fastcgi://127.0.0.1:9001", host: xx.xx.xx.xx
2022/12/22 11:27:42 [error] 36129#36129: *8378 FastCGI sent in stderr: "PHP message: PHP Warning: Undefined array key "context" in /var/www/virtualbox/endpoints/lib/language.php on line 77" while reading response header from upstream, client: 172.71.11.133, server:xx.xx.xx.xx, request: "GET /endpoints/language.php?_=1671719262366 HTTP/2.0", upstream: "fastcgi://127.0.0.1:9001", host: "xx.xx.xx.xx"
2022/12/22 11:28:36 [error] 36129#36129: *8373 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught ArgumentCountError: Too few arguments to function IVirtualBox::createMachine(), 6 passed in /var/www/virtualbox/endpoints/lib/vboxconnector.php on line 3802 and exactly 8 expected in /var/www/virtualbox/endpoints/lib/vboxServiceWrappers.php:1544
Stack trace:
#0 /var/www/virtualbox/endpoints/lib/vboxconnector.php(3802): IVirtualBox->createMachine(NULL, 'win2016vm', NULL, 'Windows2016_64', NULL, NULL)
#1 /var/www/virtualbox/endpoints/lib/vboxconnector.php(951): vboxconnector->remote_machineCreate(Array)
#2 /var/www/virtualbox/endpoints/api.php(316): vboxconnector->__call('machineCreate', Array)
#3 {main}
thrown in /var/www/virtualbox/endpoints/lib/vboxServiceWrappers.php on line 1544" while reading response header from upstream, client: 172.71.11.133, server: xx.xx.xx.xx, request: "POST /endpoints/api.php HTTP/2.0", upstream: "fastcgi://127.0.0.1:9001", host: "xx.xx.xx.xx"

Trying with php 7.4/8.0