Upgrade to 4.3.1 help

It is the example when you installed CI via Composer.
When you installed CI manually, download a new copy of the framework, and then copy the files.
https://github.com/CodeIgniter4/framewor...tag/v4.3.1

Hi, I confirm I followed the manual procedure, i have copied the system directory. I confirm spark gives that error,

Call to a member function getStatusCode() on null

at ROOTPATH\spark:100

I have another question: so if I update the CI new release manually, i have to avoid running composer update? If yes, how can i update the vendor libraries?

Thanks