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generated template.yml doesn't work with `sam local start-api`

See original GitHub issue

Using the same serverless.yml as #12, when I run sam local start-api I get the error:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1702c38]

goroutine 1 [running]:
main.start(0xc42008d040)
        /root/go/src/github.com/awslabs/aws-sam-local/start.go:122 +0xe18
github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli.HandleAction(0x17d56e0, 0x19d02a0, 0xc42008d040, 0xc4202d3e00, 0x0)
        /root/go/src/github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli/app.go:487 +0x7c
github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli.Command.Run(0x19a5845, 0x9, 0x0, 0x0, 0x0, 0x0, 0x0, 0x19cde2e, 0x3c9, 0x0, ...)
        /root/go/src/github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli/command.go:207 +0xb72
github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli.(*App).RunAsSubcommand(0xc4204e6340, 0xc42008ca00, 0x0, 0x0)
        /root/go/src/github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli/app.go:374 +0xacc
github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli.Command.startApp(0x19a2d5c, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x19ca20b, 0x47, 0x0, ...)
        /root/go/src/github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli/command.go:293 +0x8a3
github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli.Command.Run(0x19a2d5c, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x19ca20b, 0x47, 0x0, ...)
        /root/go/src/github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli/command.go:93 +0x14c7
github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli.(*App).Run(0xc420491d40, 0xc42000e2d0, 0x3, 0x3, 0x0,0x0)
        /root/go/src/github.com/awslabs/aws-sam-local/vendor/github.com/codegangsta/cli/app.go:250 +0x7d0
main.main()
        /root/go/src/github.com/awslabs/aws-sam-local/main.go:375 +0x24a2

I’m using SAM version 0.2.4.

The only way I have found to “fix it” is to remove both the BigMouth CFN resource, as well as all references to it in the template.yml. I appreciate this is probably problem with SAM local, but I’m just wondering if you have any insight into what might be the problem.