echobot example has problems

[XANi]

I ran near-unchanged (changed port to 8080) echobot from samples directory and got nil panic:

Starting server on port:8080...
2022/10/05 19:38:27 http: panic serving 10.100.199.14:11078: runtime error: invalid memory address or nil pointer dereference
goroutine 18 [running]:
net/http.(*conn).serve.func1()
	/usr/lib/go-1.18/src/net/http/server.go:1825 +0xbf
panic({0x6e4640, 0x962d50})
	/usr/lib/go-1.18/src/runtime/panic.go:844 +0x258
github.com/infracloudio/msbotbuilder-go/connector/client.(*ConnectorClient).getToken(0xc00010c000, {0x7b8b80, 0xc0000a8000})
	/tmp/msbotbuilder-go/connector/client/client.go:178 +0x9c9
github.com/infracloudio/msbotbuilder-go/connector/client.(*ConnectorClient).sendRequest(_, _, {{0x730559, 0x7}, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0x0, ...}, ...})
	/tmp/msbotbuilder-go/connector/client/client.go:116 +0x55
github.com/infracloudio/msbotbuilder-go/connector/client.(*ConnectorClient).Post(_, {_, _}, {{0xc0000a66f0, 0x5}, {0x0, 0x0}, 0x0, {0xc0000a66f8, 0x17}, ...}, ...)
	/tmp/msbotbuilder-go/connector/client/client.go:84 +0x19b
github.com/infracloudio/msbotbuilder-go/core/activity.(*DefaultResponse).SendActivity(_, {_, _}, {{0x730559, 0x7}, {0x0, 0x0}, {0x0, 0x0, 0x0}, ...})
	/tmp/msbotbuilder-go/core/activity/response.go:84 +0x2cd
github.com/infracloudio/msbotbuilder-go/core.(*BotFrameworkAdapter).ProcessActivity(_, {_, _}, {{0xc0000a9950, 0x7}, {0xc0000a99a3, 0xd}, {0x1cd06634, 0xedacfb812, 0x0}, ...}, ...)
	/tmp/msbotbuilder-go/core/bot_framework_adapter.go:115 +0x1b9
main.(*HTTPHandler).processMessage(0xc00009ed20, {0x7b8968, 0xc00010c1c0}, 0x4cef69?)
	/tmp/msbotbuilder-go/samples/echobot/main.go:36 +0x20d
net/http.HandlerFunc.ServeHTTP(0x6d3660?, {0x7b8968?, 0xc00010c1c0?}, 0xc00012c080?)
	/usr/lib/go-1.18/src/net/http/server.go:2084 +0x2f
net/http.(*ServeMux).ServeHTTP(0x0?, {0x7b8968, 0xc00010c1c0}, 0xc00012a000)
	/usr/lib/go-1.18/src/net/http/server.go:2462 +0x149
net/http.serverHandler.ServeHTTP({0x7b7b20?}, {0x7b8968, 0xc00010c1c0}, 0xc00012a000)
	/usr/lib/go-1.18/src/net/http/server.go:2916 +0x43b
net/http.(*conn).serve(0xc0000bcb40, {0x7b8bf0, 0xc0000a3230})
	/usr/lib/go-1.18/src/net/http/server.go:1966 +0x5d7
created by net/http.(*Server).Serve
	/usr/lib/go-1.18/src/net/http/server.go:3071 +0x4db
2022/10/05 19:38:28 http: panic serving 10.100.199.12:50088: runtime error: invalid memory address or nil pointer dereference
goroutine 26 [running]:
net/http.(*conn).serve.func1()
	/usr/lib/go-1.18/src/net/http/server.go:1825 +0xbf
panic({0x6e4640, 0x962d50})
	/usr/lib/go-1.18/src/runtime/panic.go:844 +0x258
github.com/infracloudio/msbotbuilder-go/connector/client.(*ConnectorClient).getToken(0xc00010c000, {0x7b8b80, 0xc0000a8000})
	/tmp/msbotbuilder-go/connector/client/client.go:178 +0x9c9
github.com/infracloudio/msbotbuilder-go/connector/client.(*ConnectorClient).sendRequest(_, _, {{0x730559, 0x7}, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0x0, ...}, ...})
	/tmp/msbotbuilder-go/connector/client/client.go:116 +0x55
github.com/infracloudio/msbotbuilder-go/connector/client.(*ConnectorClient).Post(_, {_, _}, {{0xc0005c8180, 0x5}, {0x0, 0x0}, 0x0, {0xc0005c8188, 0x17}, ...}, ...)
	/tmp/msbotbuilder-go/connector/client/client.go:84 +0x19b
github.com/infracloudio/msbotbuilder-go/core/activity.(*DefaultResponse).SendActivity(_, {_, _}, {{0x730559, 0x7}, {0x0, 0x0}, {0x0, 0x0, 0x0}, ...})
	/tmp/msbotbuilder-go/core/activity/response.go:84 +0x2cd
github.com/infracloudio/msbotbuilder-go/core.(*BotFrameworkAdapter).ProcessActivity(_, {_, _}, {{0xc0003301d0, 0x7}, {0xc0003301e0, 0xd}, {0x1cd06634, 0xedacfb812, 0x0}, ...}, ...)
	/tmp/msbotbuilder-go/core/bot_framework_adapter.go:115 +0x1b9
main.(*HTTPHandler).processMessage(0xc00009ed20, {0x7b8968, 0xc00010c2a0}, 0xc000204100?)
	/tmp/msbotbuilder-go/samples/echobot/main.go:36 +0x20d
net/http.HandlerFunc.ServeHTTP(0x0?, {0x7b8968?, 0xc00010c2a0?}, 0xc00012c0c0?)
	/usr/lib/go-1.18/src/net/http/server.go:2084 +0x2f
net/http.(*ServeMux).ServeHTTP(0x0?, {0x7b8968, 0xc00010c2a0}, 0xc000204100)
	/usr/lib/go-1.18/src/net/http/server.go:2462 +0x149
net/http.serverHandler.ServeHTTP({0x7b7b20?}, {0x7b8968, 0xc00010c2a0}, 0xc000204100)
	/usr/lib/go-1.18/src/net/http/server.go:2916 +0x43b
net/http.(*conn).serve(0xc0000bcd20, {0x7b8bf0, 0xc0000a3230})
	/usr/lib/go-1.18/src/net/http/server.go:1966 +0x5d7
created by net/http.(*Server).Serve
	/usr/lib/go-1.18/src/net/http/server.go:3071 +0x4db

I've captured the request

POST /api/messages HTTP/1.1
authorization: Bearer <redacted>
x-ms-conversation-id: <redacted>
x-ms-tenant-id: <redacted>
user-agent: Microsoft-SkypeBotApi (Microsoft-BotFramework/3.0)
ms-cv: <redacted>
content-type: application/json; charset=utf-8
host: <redacted>
content-length: 1055
x-forwarded-proto: https
x-forwarded-for: 52.113.205.15
connection: close

{"text":"testbot ","textFormat":"plain","attachments":[{"contentType":"text/html","content":"<p>testbot </p>"}],"type":"message","timestamp":"2022-10-05T17:40:48.2890875Z","localTimestamp":"2022-10-05T19:40:48.2890875+02:00","id":"1664991648254","channelId":"msteams","serviceUrl":"https://smba.trafficmanager.net/emea/","from":{"id":"29:17Tq-xb-FxJqethEHuG1XHhISPVERKQZO9AfLaR8tKckt1f1Lmfv1rkFr6LRO2Ok9NQyVsvmseJTQE2UsKnVnVw","name":"<redacted>","aadObjectId":"<redacted>"},"conversation":{"conversationType":"personal","tenantId":"<redacted>","id":"a:1Wa3YlVHUQoiefkiY_LBvhvffdgm1qBVPPvlakMDeWY031MShWvqA4XpXMaJijhzoSWfwQr5jx04CYptl2lhNtLelbIzV4Py7AIGwCkANBrtrjHHonC_hYp8fZijny6Kj"},"recipient":{"id":"28:7d7fb618-9d5c-4c42-b4e7-95030b5fb9e9","name":"testbot"},"entities":[{"locale":"en-US","country":"US","platform":"Web","timezone":"Europe/Warsaw","type":"clientInfo"}],"channelData":{"tenant":{"id":"<redacted>"}},"locale":"en-US","localTimezone":"Europe/Warsaw"}

but it looks just fine...

[smlsr]

I am seeing the same thing - anyone have a solution?