panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x60 pc=0x1808bfd]

goroutine 166 [running]:
knative.dev/serving/pkg/reconciler/autoscaling/kpa.(*Reconciler).ReconcileKind(0xc00043f5c0, 0x20a1020, 0xc003d708a0, 0xc0044a6240, 0x2066f60, 0xc0044a63f8)
	/opt/app-root/src/go/src/knative.dev/serving/pkg/reconciler/autoscaling/kpa/kpa.go:151 +0x14fd
knative.dev/serving/pkg/client/injection/reconciler/autoscaling/v1alpha1/podautoscaler.(*reconcilerImpl).Reconcile(0xc0002dd340, 0x20a1020, 0xc003d70720, 0xc0044b0720, 0x26, 0xc003b87888, 0x20a1020)
	/opt/app-root/src/go/src/knative.dev/serving/pkg/client/injection/reconciler/autoscaling/v1alpha1/podautoscaler/reconciler.go:255 +0x1447
knative.dev/pkg/controller.(*Impl).processNextWorkItem(0xc000504240, 0xc00019cf00)
	/opt/app-root/src/go/src/knative.dev/serving/vendor/knative.dev/pkg/controller/controller.go:513 +0x708
knative.dev/pkg/controller.(*Impl).RunContext.func3(0xc002fcde30, 0xc000504240)
	/opt/app-root/src/go/src/knative.dev/serving/vendor/knative.dev/pkg/controller/controller.go:451 +0x53
created by knative.dev/pkg/controller.(*Impl).RunContext
	/opt/app-root/src/go/src/knative.dev/serving/vendor/knative.dev/pkg/controller/controller.go:449 +0x19c