Please update the source code online for reference

Question

The situation is like this. I found a domain name authorization control system on the Internet and I am very interested in using it for research. But the code updated online cannot be debugged no matter how hard it is. I hope the master will write a case for reference. The general meaning is that when the server is updated, the client compares the version differences and prompts whether to upgrade. The upgrade process is to download files, replace and delete the update package. If the database is updated, it will prompt that a table or field is added.