Slim 4 psr7-sessions/storageless (solved)

2

Maybe dflydev/fig-cookies is missing?

Since PSR7Session depends on lcobucci/jwt , lcobucci/clock , and dflydev/fig-cookies , you need to require them as well, since with this sort of setup you are explicitly using those components:

composer require "lcobucci/jwt:~3.1" 
composer require "lcobucci/clock:^1.1.0" 
composer require "dflydev/fig-cookies:^1.0.1"

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