cf login issue with terminal

[cah-sai-madaupu]

Please fill out the issue checklist below and provide ALL the requested information.
When trying to do a cf login from terminal I get this error
Something unexpected happened. This is a bug in cf.

	Please re-run the command that caused this exception with the environment
	variable CF_TRACE set to true.

	Also, please update to the latest cli and try the command again:
	https://code.cloudfoundry.org/cli/releases

	Please create an issue at: https://code.cloudfoundry.org/cli/issues

	Include the below information when creating the issue:

• I reviewed open and closed github issues that may be related to my problem.
• I tried updating to the latest version of the CF CLI to see if it fixed my problem.
• I attempted to run the command with CF_TRACE=1 to help debug the issue.
• I am reporting a bug that others will be able to reproduce.
• If this is an issue for the v7 beta release, I've read through the official docs and the release notes.

Describe the bug and the command you saw an issue with
Provide details on what you were trying to do (and why).

Command
cf login -a https://api.system.cf.np.gc.cahcloud.net --sso

	CLI Version
	6.49.0+d0dfa93bb.2020-01-07

	Error
	runtime error: invalid memory address or nil pointer dereference

Stack Trace
goroutine 1 [running]:
code.cloudfoundry.org/cli/util/panichandler.HandlePanic()
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/util/panichandler/handler.go:19 +0x81
panic(0x1a7bf40, 0x24ff780)
/usr/local/Cellar/go/1.13.4/libexec/src/runtime/panic.go:679 +0x1b2
code.cloudfoundry.org/cli/command/v6.(*LoginCommand).determineAPIEndpoint(0x2529588, 0x203000, 0x203000, 0x61c06f0, 0x0, 0x8, 0x0)
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/command/v6/login_command.go:283 +0x19b
code.cloudfoundry.org/cli/command/v6.(*LoginCommand).Execute(0x2529588, 0xc000589d40, 0x0, 0x2, 0x0, 0x0)
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/command/v6/login_command.go:127 +0x88
main.executionWrapper(0x6300708, 0x2529588, 0xc000589d40, 0x0, 0x2, 0x0, 0x0)
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/main.go:263 +0x26e
code.cloudfoundry.org/cli/vendor/github.com/jessevdk/go-flags.(*Parser).ParseArgs(0xc0005fb960, 0xc0000c0190, 0x2, 0x2, 0x8, 0x10, 0xc0004242f0, 0x1b826a0, 0xc0000f5080)
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/vendor/github.com/jessevdk/go-flags/parser.go:331 +0x89c
main.parse(0xc0000c0190, 0x2, 0x2, 0x1a813e0, 0x2526be0, 0xc000523f50)
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/main.go:61 +0xaa
main.main()
/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/main.go:49 +0xae

goroutine 19 [syscall]:
os/signal.signal_recv(0x0)
	/usr/local/Cellar/go/1.13.4/libexec/src/runtime/sigqueue.go:144 +0x96
os/signal.loop()
	/usr/local/Cellar/go/1.13.4/libexec/src/os/signal/signal_unix.go:23 +0x22
created by os/signal.init.0
	/usr/local/Cellar/go/1.13.4/libexec/src/os/signal/signal_unix.go:29 +0x41

goroutine 640 [chan receive]:
code.cloudfoundry.org/cli/util/configv3.catchSignal(0xc000450180, 0xc000362000, 0x34)
	/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/util/configv3/write_config.go:55 +0x34
created by code.cloudfoundry.org/cli/util/configv3.(*Config).WriteConfig
	/Users/pivotal/concourse/volumes/live/0f11c0a4-8615-4a2a-6b67-d6b283919f2c/volume/gopath/src/code.cloudfoundry.org/cli/util/configv3/write_config.go:40 +0x2c9


	Your Platform Details
	e.g. Mac OS X 10.11, Windows 8.1 64-bit, Ubuntu 14.04.3 64-bit

	Shell
	e.g. Terminal, iTerm, Powershell, Cygwin, gnome-terminal, terminator
	%                                                                            

What happened
A clear and concise description of what happen.
Unable to login.

Expected behavior
A clear and concise description of what you expected to happen.
I expect to see a request for me to put the sso token so that I get logged in via the CLI.

To Reproduce
Steps to reproduce the behavior; include the exact CLI commands and verbose output:
From a MacOS Catalina version 10.15.3
install CF CLI
Then do a cf login -a {URL} --sso

Provide more context

• platform and shell details ( e.g. Mac OS X 10.11 iTerm)
• version of the CLI you are running
• version of the CC API Release you are on

Note: As of January 2019, we no longer support API versions older than CF Release v284/CF Deployment v1.7.0 (CAPI Release: 1.46.0 (APIs 2.100.0 and 3.35.0).

Note: In order to complete the v7 beta cf CLI in a timely matter, we develop and test against the latest CAPI release candidate. When v7 cf CLI is generally available, we will start supporting official CC API releases again.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/171158146

The labels on this github issue will be updated when the story is started.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed.

[a-b]

Thank you for your submission. If you still run into this issue with the latest CLI v8, please open a new ticket.