minikube update-context: invalid memory address or nil pointer dereference

[superbrothers]

minikube update-context command occurs the following error:

 panic: runtime error: invalid memory address or nil pointer dereference
 [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x523891f]
 
 goroutine 1 [running]:
 k8s.io/minikube/pkg/minikube/kubeconfig.UpdateEndpoint(0x57bad36, 0x8, 0xc000bd9410, 0xe, 0x20fb, 0xc00013f560, 0x19, 0x5b32f40, 0xc000bdd560, 0xc000bd9410)
         /private/tmp/minikube-20200812-94589-17snemo/pkg/minikube/kubeconfig/kubeconfig.go:143 +0x2af
 k8s.io/minikube/cmd/minikube/cmd.glob..func31(0x6927200, 0x696cf80, 0x0, 0x0)
         /private/tmp/minikube-20200812-94589-17snemo/cmd/minikube/cmd/update-context.go:37 +0x10a
 github.com/spf13/cobra.(*Command).execute(0x6927200, 0x696cf80, 0x0, 0x0, 0x6927200, 0x696cf80)
         /Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/[email protected]/command.go:846 +0x29d
 github.com/spf13/cobra.(*Command).ExecuteC(0x6925280, 0x0, 0x1, 0xc00024fbe0)
         /Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/[email protected]/command.go:950 +0x349
 github.com/spf13/cobra.(*Command).Execute(...)
         /Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/[email protected]/command.go:887
 k8s.io/minikube/cmd/minikube/cmd.Execute()
         /private/tmp/minikube-20200812-94589-17snemo/cmd/minikube/cmd/root.go:106 +0x72c
 main.main()
         /private/tmp/minikube-20200812-94589-17snemo/cmd/minikube/main.go:71 +0x11f

Steps to reproduce the issue:

$ minikube start --vm-driver virtualbox
😄  minikube v1.12.3 on Darwin 10.15.5
✨  Using the virtualbox driver based on user configuration
👍  Starting control plane node minikube in cluster minikube
🔥  Creating virtualbox VM (CPUs=2, Memory=6000MB, Disk=20000MB) ...
🐳  Preparing Kubernetes v1.18.3 on Docker 19.03.12 ...
🔎  Verifying Kubernetes components...
🌟  Enabled addons: default-storageclass, storage-provisioner
🏄  Done! kubectl is now configured to use "minikube"
$ cat <<EOL > kubeconfig
apiVersion: v1
clusters:
- cluster:
    certificate-authority: /home/la-croix/apiserver.crt
    server: 192.168.1.1:8080
  name: la-croix
contexts:
- context:
    cluster: la-croix
    user: la-croix
  name: la-croix
current-context: la-croix
kind: Config
preferences: {}
users:
- name: la-croix
  user:
    client-certificate: /home/la-croix/apiserver.crt
    client-key: /home/la-croix/apiserver.key
EOL
$ KUBECONFIG=./kubeconfig minikube update-context
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x523891f]

goroutine 1 [running]:
k8s.io/minikube/pkg/minikube/kubeconfig.UpdateEndpoint(0x57bad36, 0x8, 0xc000c4c3a0, 0xe, 0x20fb, 0xc00003e22b, 0xc, 0x5b32f40, 0xc0003d2000, 0xc000c4c3a0)
        /private/tmp/minikube-20200812-94589-17snemo/pkg/minikube/kubeconfig/kubeconfig.go:143 +0x2af
k8s.io/minikube/cmd/minikube/cmd.glob..func31(0x6927200, 0x696cf80, 0x0, 0x0)
        /private/tmp/minikube-20200812-94589-17snemo/cmd/minikube/cmd/update-context.go:37 +0x10a
github.com/spf13/cobra.(*Command).execute(0x6927200, 0x696cf80, 0x0, 0x0, 0x6927200, 0x696cf80)
        /Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/[email protected]/command.go:846 +0x29d
github.com/spf13/cobra.(*Command).ExecuteC(0x6925280, 0x0, 0x1, 0xc00053a0c0)
        /Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/[email protected]/command.go:950 +0x349
github.com/spf13/cobra.(*Command).Execute(...)
        /Users/brew/Library/Caches/Homebrew/go_mod_cache/pkg/mod/github.com/spf13/[email protected]/command.go:887
k8s.io/minikube/cmd/minikube/cmd.Execute()
        /private/tmp/minikube-20200812-94589-17snemo/cmd/minikube/cmd/root.go:106 +0x72c
main.main()
        /private/tmp/minikube-20200812-94589-17snemo/cmd/minikube/main.go:71 +0x11f

Full output of failed command:

Full output of minikube start command used, if not already included:

Optional: Full output of minikube logs command: