NextCloud on MyVestaCP (Nginx)

I have installed NextCloud on MyVestaCP with the installer. The installation was completed but all CSS and JavaScript are not loading.

2024/04/13 20:46:47 [error] 51996#51996: *430 openat() "/home/admin/web/cloud.example.com/public_html/index.php/apps/theming/theme/default.css" failed (20: Not a directory), client: 123.123.123.123, server: cloud.example.com, request: "GET /index.php/apps/theming/theme/default.css?plain=1&v=6e3f3bf0 HTTP/2.0", host: "cloud.example.com"
2024/04/13 20:46:47 [error] 51996#51996: *430 openat() "/home/admin/web/cloud.example.com/public_html/index.php/apps/theming/theme/light.css" failed (20: Not a directory), client: 123.123.123.123, server: cloud.example.com, request: "GET /index.php/apps/theming/theme/light.css?plain=1&v=6e3f3bf0 HTTP/2.0", host: "cloud.example.com"
2024/04/13 20:46:47 [error] 51996#51996: *430 openat() "/home/admin/web/cloud.example.com/public_html/index.php/apps/theming/theme/light.css" failed (20: Not a directory), client: 123.123.123.123, server: cloud.example.com, request: "GET /index.php/apps/theming/theme/light.css?plain=0&v=6e3f3bf0 HTTP/2.0", host: "cloud.example.com"

I am NOT sure whether it is related to NGINX. Actually, I tried to ask at MyVestaCP forum but there was no reply. It is likely working but I can read the screen without any formatting.