Im trying to setup api testing and its just not working. I have no prior knowledge with codeception.

First issue - running ./vendor/bin/codecept g:suite api command generates a dir with a capital A

So the next command (php vendor/bin/codecept generate:cest api CreateUser) from api docs just doesnt work.

I spent ages to find a random solution - it should be ...Api CreateUser).

Now the second, after finally generating a test suite, i simply fail to run it:

I have no idea about this module and where to find it, i tried to rebuild the suits but it doesnt help.
Im using the Api.suite.yml config from the official guide. Im simply using a basic yii template, the guide doesnt state any additional configuration for api testing.