This problem seems to be a bug in either passenger or bundler when dealing with git-based gems. This "solution" (I'm writing vendor instead of vender...) got my passenger running right now.
There's no such tag or version '0.50.99' that I can see of on github.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.