mix phx.gen.release --docker: exit status 1

Hello,

I can’t deploy a phoenix Application (using fly launch).

Here is the console output using –debug –verbose :

Preparing system for Elixir builds
Installing application dependencies
Running Docker release generator


Error: 

failed running /Users/charles/.asdf/shims/mix phx.gen.release --docker: exit status 1 
Stacktrace:
goroutine 1 [running]:
runtime/debug.Stack()
        runtime/debug/stack.go:26 +0x64
github.com/superfly/flyctl/internal/cli.printError(0x589a410a81e0, 0x589a4141fbed, 0x589a412a3508, {0x1043a4720, 0x589a418686a0})
        github.com/superfly/flyctl/internal/cli/cli.go:190 +0x460
github.com/superfly/flyctl/internal/cli.Run({0x1043d0890?, 0x589a411b4bc0?}, 0x589a410a81e0, {0x589a40be0060, 0x4, 0x4})
        github.com/superfly/flyctl/internal/cli/cli.go:120 +0x95c
main.run()
        github.com/superfly/flyctl/main.go:47 +0x15c
main.main()
        github.com/superfly/flyctl/main.go:26 +0x20

Anyone has an idea ?

Thanks