I encountered this problem when installing 4.5.7 or other versions: 5C348/1 The installer uses PHP sessions to store data, however PHP sessions are currently not working correctly on your server. This is an issue you will need to contact your host about.

I have been researching for a day, and I haven’t found any mistakes. It was able to be installed before, but now I don’t know why. I have also reinstalled the system many times and it is still the same.