PAGER cannot have spaces or tabs!

Hello there !

I am trying to upgrade a nerves project I haven’t touched since at least last summer. I upgraded nerves deps to recent versions, but after doing a mix firmware, I get this cryptic message: “PAGER cannot have spaces or tabs! If you want to do this, please use a wrapper script!” . Have you any idea of where it could come from ?

Thanks for help

sorry it was an env var that was set . Without it, it works fine !