Hi Team, I'm

getting socket hangout error

when trying with expand REST api.

curl --location --request GET '<http://127.0.0.1:4466/relation-tuples/expand?namespace=groups&object=test/manager&relation=member>' \

--header 'Content-Type: application/json' \

--data-raw ''

And I have below error logs.

keto-new-copy-keto-1   | time=2022-11-21T05:31:06Z level=info msg=started handling request http_request=map[headers:map[accept:*/* accept-encoding:gzip, deflate, br connection:keep-alive content-type:application/json postman-token:0ef37af9-2f24-4cbf-bda0-b0e4b5d1d2b9 user-agent:PostmanRuntime/7.29.2] host:127.0.0.1:4466 method:GET path:/relation-tuples/expand query:Value is sensitive and has been redacted. To see the value set config key "log.leak_sensitive_values = true" or environment variable "LOG_LEAK_SENSITIVE_VALUES=true". remote:172.24.0.1:45948 scheme:http]

keto-new-copy-keto-1   | 2022/11/21 05:31:06 http: panic serving 172.24.0.1:45948: runtime error: invalid memory address or nil pointer dereference

keto-new-copy-keto-1   | goroutine 2678 [running]:

keto-new-copy-keto-1   | net/http.(*conn).serve.func1()

keto-new-copy-keto-1   | 	/usr/local/go/src/net/http/server.go:1850 +0xbf

keto-new-copy-keto-1   | panic({0x11af9a0, 0x1df9b10})

keto-new-copy-keto-1   | 	/usr/local/go/src/runtime/panic.go:890 +0x262

keto-new-copy-keto-1   | <http://github.com/ory/keto/internal/relationtuple.(*Mapper).ToTree(0xc0003d8c10|github.com/ory/keto/internal/relationtuple.(*Mapper).ToTree(0xc0003d8c10>, {0x16545d8, 0xc000b166f0}, 0x0)

keto-new-copy-keto-1   | 	/project/internal/relationtuple/uuid_mapping.go:314 +0x13f

keto-new-copy-keto-1   | <http://github.com/ory/keto/internal/expand.(*handler).getExpand(0xc0005648e0|github.com/ory/keto/internal/expand.(*handler).getExpand(0xc0005648e0>, {0x7f0e95dd3be0, 0xc000462038}, 0xc000743200, {0xc000093f90?, 0x0?, 0xc000420df5?})

keto-new-copy-keto-1   | 	/project/internal/expand/handler.go:100 +0x325

keto-new-copy-keto-1   | <http://github.com/julienschmidt/httprouter.(*Router).ServeHTTP(0xc0001302a0|github.com/julienschmidt/httprouter.(*Router).ServeHTTP(0xc0001302a0>, {0x7f0e95dd3be0, 0xc000462038}, 0xc000743200)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/julienschmidt/httprouter@v1.3.0/router.go:387 +0x81c

keto-new-copy-keto-1   | <http://github.com/urfave/negroni.Wrap.func1({0x7f0e95dd3be0|github.com/urfave/negroni.Wrap.func1({0x7f0e95dd3be0>, 0xc000462038}, 0x11ef940?, 0xc0006943e0)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/urfave/negroni@v1.0.0/negroni.go:46 +0x4b

keto-new-copy-keto-1   | <http://github.com/urfave/negroni.HandlerFunc.ServeHTTP(0x11c49e0|github.com/urfave/negroni.HandlerFunc.ServeHTTP(0x11c49e0>?, {0x7f0e95dd3be0?, 0xc000462038?}, 0xc000110fc0?, 0x0?)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/urfave/negroni@v1.0.0/negroni.go:29 +0x33

keto-new-copy-keto-1   | <http://github.com/urfave/negroni.middleware.ServeHTTP({{0x164afa0|github.com/urfave/negroni.middleware.ServeHTTP({{0x164afa0>?, 0xc000460b28?}, 0xc000460c00?}, {0x7f0e95dd3be0, 0xc000462038}, 0x18?)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/urfave/negroni@v1.0.0/negroni.go:38 +0xb6

keto-new-copy-keto-1   | <http://github.com/ory/x/reqlog.(*Middleware).ServeHTTP(0xc0006e4230|github.com/ory/x/reqlog.(*Middleware).ServeHTTP(0xc0006e4230>, {0x7f0e95dd3be0?, 0xc000462038}, 0xc000743200, 0xc0006943c0)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/ory/x@v0.0.473/reqlog/middleware.go:134 +0x39d

keto-new-copy-keto-1   | <http://github.com/urfave/negroni.middleware.ServeHTTP({{0x1647b40|github.com/urfave/negroni.middleware.ServeHTTP({{0x1647b40>?, 0xc0006e4230?}, 0xc000460be8?}, {0x7f0e95dd3be0, 0xc000462038}, 0x0?)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/urfave/negroni@v1.0.0/negroni.go:38 +0xb6

keto-new-copy-keto-1   | <http://github.com/urfave/negroni.(*Negroni).ServeHTTP(0xc00045cba0|github.com/urfave/negroni.(*Negroni).ServeHTTP(0xc00045cba0>, {0x1653f20?, 0xc000982900}, 0x1643440?)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/urfave/negroni@v1.0.0/negroni.go:96 +0x125

keto-new-copy-keto-1   | <http://go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp.(*Handler).ServeHTTP(0xc0007006e0|go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp.(*Handler).ServeHTTP(0xc0007006e0>, {0x1652f00?, 0xc000b500e0}, 0xc000742f00)

keto-new-copy-keto-1   | 	/go/pkg/mod/go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp@v0.35.0/handler.go:204 +0x10b1

keto-new-copy-keto-1   | <http://github.com/ory/x/otelx.TraceHandler.func1({0x1652f00|github.com/ory/x/otelx.TraceHandler.func1({0x1652f00>, 0xc000b500e0}, 0xc000742f00)

keto-new-copy-keto-1   | 	/go/pkg/mod/github.com/ory/x@v0.0.473/otelx/middleware.go:48 +0x5d

keto-new-copy-keto-1   | net/http.HandlerFunc.ServeHTTP(0xc000420dfc?, {0x1652f00?, 0xc000b500e0?}, 0x474b2e?)

keto-new-copy-keto-1   | 	/usr/local/go/src/net/http/server.go:2109 +0x2f

keto-new-copy-keto-1   | net/http.serverHandler.ServeHTTP({0xc000b16540?}, {0x1652f00, 0xc000b500e0}, 0xc000742f00)

keto-new-copy-keto-1   | 	/usr/local/go/src/net/http/server.go:2947 +0x30c

keto-new-copy-keto-1   | net/http.(*conn).serve(0xc000afe000, {0x16545d8, 0xc00062e4e0})

keto-new-copy-keto-1   | 	/usr/local/go/src/net/http/server.go:1991 +0x607

keto-new-copy-keto-1   | created by net/http.(*Server).Serve

keto-new-copy-keto-1   | 	/usr/local/go/src/net/http/server.go:3102 +0x4db

Any idea why I'm getting the above error?

This is likely https://github.com/ory/keto/pull/1139

Thanks @steep-lamp-91158