With new version, we won't need skills extension, but when it is there (from previous installs) will see variants of this:

Warning: Failed to start extension 'skills' (invalid config: Unknown platform extension: skills), continuing without it
◆  Would you like me to help debug the 'skills' extension failure?
│  ○ Yes  / ● No
└

Solution: should either have a stub that loads it or explicitly filter it out (as it is a dead extension now).