When attempting to run this:
civix generate:api Invoice Create
It creates an /api/v3/Invoice folder but doesn't create any files. Instead I get the following:
Warning: ini_set(): A session is active. You cannot change the session module's ini settings at this time in /home/ubuntu/civix/vendor/symfony/symfony/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/NativeFileSessionHandler.php line 56
Civix works for me otherwise; I can create extensions, pages, etc. Any suggestions?