I have to projects on my local server. The were working perfectly. I didn't change anything at all. But when I went to look at them today I got the following error:
Fatal error: Class CI_Session_files_driver contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (SessionHandlerInterface::open) in C:\xampp\htdocs\ci\system\libraries\Session\drivers\Session_files_driver.php on line 49
I found another post at Fatal error: Class CI_Session_files_driver contains 1 abstract method that had the same issue.
However, the answer said this problem was caused becasue changes were made in the system folder. However, I never changed the system folder. Other comments suggested making changes to the system file in question. I tried these changes, despite other comments advising to not change the file, but the changes did not help.
I'm beyond baffled, because I never made a change to any of my files. The applications were working fine yesterday. Suddenly, they are broken.