Description of problem:

Workaround

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Create s pipeline

2. Start the pipeline with --timeout flag 

Actual results:

tkn p start wait-pipeline --timeout 10m                                                             
Flag --timeout has been deprecated, please use --pipeline-timeout flag instead
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x29cae7f]

goroutine 1 [running]:
github.com/tektoncd/cli/pkg/cmd/pipeline.(*startOptions).startPipeline(0xc000790000, 0xc000e1c8c0)
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/pkg/cmd/pipeline/start.go:298 +0x6ff
github.com/tektoncd/cli/pkg/cmd/pipeline.(*startOptions).run(0xc000d94750?, 0x1?)
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/pkg/cmd/pipeline/start.go:220 +0x45
github.com/tektoncd/cli/pkg/cmd/pipeline.startCommand.func3(0xc000562f00?, {0xc000d94750, 0x1, 0x3})
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/pkg/cmd/pipeline/start.go:170 +0x16b
github.com/spf13/cobra.(*Command).execute(0xc000562f00, {0xc000d946f0, 0x3, 0x3})
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/vendor/github.com/spf13/cobra/command.go:940 +0x862
github.com/spf13/cobra.(*Command).ExecuteC(0xc000d1e300)
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/vendor/github.com/spf13/cobra/command.go:1068 +0x3bd
github.com/spf13/cobra.(*Command).Execute(...)
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/vendor/github.com/spf13/cobra/command.go:992
main.main()
  /builddir/build/BUILD/tektoncd-cli-7af15e95cd38c3f3af5783695360bd882ff89ac5/cmd/tkn/main.go:50 +0x2a5

Expected results:

• Should start pipeline to run ** 

  Reproducibility (Always/Intermittent/Only Once):

  Acceptance criteria: 

Definition of Done:

Build Details:

Additional info (Such as Logs, Screenshots, etc):

 *