Botframework-emulator: Failed to start ngrok: panic: runtime error

[charbull]

Hello,

I am having ngrok panic !
Anybody have similar issues?

Thanks,

[15:20:08] Failed to start ngrok: panic: runtime error: invalid memory address or nil pointer dereference github.com/inconshreveable/olive/recover.go:40 runtime/asm_amd64.s:515 reflect/value.go:434 reflect/value.go:302 github.com/codegangsta/inject/inject.go:102 <autogenerated>:30 <autogenerated>:132 github.com/inconshreveable/olive/recover.go:29 runtime/asm_amd64.s:514 runtime/panic.go:489 github.com/inconshreveable/olive/error.go:37 runtime/asm_amd64.s:514 runtime/panic.go:489 runtime/panic.go:63 runtime/signal_windows.go:161 lib/tunnel/client/reconnecting.go:39 lib/tunnel/client/session.go:97 ngrok/tunnel_session.go:138 ngrok/web_api.go:97 runtime/asm_amd64.s:515 reflect/value.go:434 reflect/value.go:302 github.com/codegangsta/inject/inject.go:102 <autogenerated>:30 github.com/go-martini/martini/router.go:373 github.com/go-martini/martini/router.go:367 github.com/inconshreveable/olive/error.go:41 runtime/asm_amd64.s:515 reflect/value.go:434 reflect/value.go:302 github.com/codegangsta/inject/inject.go:102 <autogenerated>:30 github.com/go-martini/martini/router.go:373 github.com/go-martini/martini/router.go:367 github.com/inconshreveable/olive/recover.go:32 runtime/asm_amd64.s:515 reflect/value.go:434 reflect/value.go:302 github.com/codegangsta/inject/inject.go:102 <autogenerated>:30 github.com/go-martini/martini/router.go:373 github.com/go-martini/martini/router.go:367 github.com/inconshreveable/olive/logger.go:17 runtime/asm_amd64.s:515 reflect/value.go:434 reflect/value.go:302 github.com/codegangsta/inject/inject.go:102 <autogenerated>:30 github.com/go-martini/martini/router.go:373 github.com/go-martini/martini/router.go:250 github.com/go-martini/martini/router.go:120 ngrok/src/ngrok/web.go:27 runtime/asm_amd64.s:515 reflect/value.go:434 reflect/value.go:302 github.com/codegangsta/inject/inject.go:102 github.com/go-martini/martini/martini.go:173 github.com/go-martini/martini/martini.go:69 

[eanders-MS]

@charbull

• What version of ngrok do you have installed?
• Are you able to run ngrok directly from a command line?

Related issue reported to ngrok: https://github.com/inconshreveable/ngrok/issues/316

[eanders-MS]

Also, what is your OS?

[charbull]

Hi @eanders-MS ,

I am running on MS Win 7 Professional
I have the latest ngrok

[eanders-MS]

Are you able to run ngrok from command line? I'm wondering if this is an issue with ngrok or with the way the emulator spawns it.

[charbull]

yes it works now thx

[paolo2331]

The issue is still present on my end. I'm capable of using ngrok by command line but the emulator instead is showing this error:

[12:09:10] Failed to start ngrok: panic: runtime error: invalid memory address or nil pointer dereference

Any help?

[alinaradu]

Hi,

I found this error appearing for me when I had a proxy configured on my Windows 10 system.
Check if there is a proxy configured - in the Environment variables or by echoing %http_proxy%.
If there is one, remove it and restart the Emulator and/or the system (restarting the user session might suffice). This solved the issue for me.