I’ve a project where I made it using the latest xampp (php-8.2.12). After completed it, I decided to attached that project to my server that use older xampp version (php 7.3). I know It will not run due to the configuration that does’t meet my project. Then I decided to upgrade my server xampp to the latest one. Now my new project can be run but my older project have many error that I don’t really know how to solve. I did follow tutorial on how to upgrade xampp on Youtube, but it doesn’t have error like me. What should I do?

1. I tried to change the php and apache file to the latest one. But that doesnt resolve it
2. I tried to reinstall the new xampp into my server. It does help a little bit, where I can now use it, but several important function are not functioning.