[APM] Fix missing error.culprit

[crespocarlos]

fixes #205240

Summary

Fixes the issue where error.culprit is always missing.

How to test

• Run simple_trace synthtrace scenario
• Run the request below

POST logs-apm.error-default/_doc

POST logs-apm.error-default/_doc
{

    "container": {
      "id": "80cc20ecab1b57865d7aca0f66ab75a0c6ec2c51f7c53da04a8540215369c359"
    },
    "kubernetes": {
      "node": {
        "name": "ip-192-168-55-136.ec2.internal"
      },
      "pod": {
        "uid": "9bbfe3dc-dace-4638-b8f5-aa6ccf435cbe",
        "name": "otel-demo-green-3-cartservice-5d5ccc86dd-gcxtr"
      },
      "namespace": "otel-demo-green-3"
    },
    "parent": {
      "id": "f39639f56a540e0e"
    },
    "agent": {
      "name": "opentelemetry/dotnet",
      "version": "1.6.0"
    },
    "source": {
      "port": 35136,
      "ip": "::ffff:192.168.50.132"
    },
    "error": {
      "exception": [
        {
          "handled": true,
          "message": "Exception (plain, .NET) without culprit",
          "type": "Grpc.Core.RpcException"
        }
      ],
      "culprit": "culprit msg", // remove to test the N/A scenario
      "id": "60674e9b23c8b06d83889e63ffe82c1c", //change the id on every run
      "stack_trace": "Grpc.Core.RpcException: Status(StatusCode=\"FailedPrecondition\", Detail=\"Can't access cart storage. System.ApplicationException: Wasn't able to connect to redis\n   at cartservice.cartstore.RedisCartStore.EnsureRedisConnected() in /usr/src/app/src/cartstore/RedisCartStore.cs:line 79\n   at cartservice.cartstore.RedisCartStore.EmptyCartAsync(String userId) in /usr/src/app/src/cartstore/RedisCartStore.cs:line 157\")\n   at cartservice.cartstore.RedisCartStore.EmptyCartAsync(String userId) in /usr/src/app/src/cartstore/RedisCartStore.cs:line 166\n   at cartservice.services.CartService.EmptyCart(EmptyCartRequest request, ServerCallContext context) in /usr/src/app/src/services/CartService.cs:line 65",
      "grouping_key": "6082c58afd7fa6838ebc27eef6e04829"
    },
    "message": "Exception (plain, .NET)",
    "url": {
      "path": "/oteldemo.CartService/EmptyCart",
      "original": "http://otel-demo-green-3-cartservice:8080/oteldemo.CartService/EmptyCart",
      "scheme": "http",
      "port": 8080,
      "domain": "otel-demo-green-3-cartservice",
      "full": "http://otel-demo-green-3-cartservice:8080/oteldemo.CartService/EmptyCart"
    },
    "labels": {
      "k8s_pod_ip": "192.168.62.174",
      "k8s_pod_start_time": "2024-12-17T02:55:54Z",
      "service_namespace": "opentelemetry-demo",
      "k8s_deployment_name": "otel-demo-green-3-cartservice"
    },
    "observer": {
      "hostname": "450fbf7ab701",
      "type": "apm-server",
      "version": "8.13.2"
    },
    "trace": {
      "id": "699f6d1039fc873191a1c983790db3a2"
    },
    "@timestamp": "2024-12-30T10:30:00.000Z",
    "data_stream": {
      "namespace": "default",
      "type": "logs",
      "dataset": "apm.error"
    },
    "service": {
      "node": {
        "name": "80cc20ecab1b57865d7aca0f66ab75a0c6ec2c51f7c53da04a8540215369c359"
      },
      "framework": {
        "name": "Microsoft.AspNetCore"
      },
       "name": "synth-node-0",
      "language": {
        "name": "dotnet"
      }
    },
    "host": {
      "hostname": "ip-192-168-55-136.ec2.internal",
      "name": "ip-192-168-55-136.ec2.internal"
    },
    "client": {
      "port": 35136,
      "ip": "::ffff:192.168.50.132"
    },
    "http": {
      "request": {
        "method": "POST"
      },
      "response": {
        "status_code": 200
      },
      "version": "2"
    },
    "event": {
      "agent_id_status": "missing",
      "ingested": "2024-12-18T18:04:22Z"
    },
    "transaction": {
      "id": "f39639f56a540e0e",
      "type": "request",
      "sampled": true
    },
    "user_agent": {
      "original": "grpc-go/1.59.0",
      "name": "Other",
      "device": {
        "name": "Other"
      }
    },
    "span": {
      "id": "f39639f56a540e0e"
    },
    "timestamp": {
      "us": 1704892605838000
    }
  }

[crespocarlos]

/ci

[elasticmachine]

Pinging @elastic/obs-ux-infra_services-team (Team:obs-ux-infra_services)

[Bluefinger]

LGTM

[kibanamachine]

Starting backport for target branches: 8.16, 8.17, 8.x

https://github.com/elastic/kibana/actions/runs/12546786493

[kibanamachine]

💔 Some backports could not be created

Status	Branch	Result
❌	8.16	Backport failed because of merge conflicts You might need to backport the following PRs to 8.16: - [ci] Update VM cache for each ES snapshot (#205119) - Fixes for storybook aliases (#204842)
✅	8.17
✅	8.x

Note: Successful backport PRs will be merged automatically after passing CI.

Manual backport

To create the backport manually run:

node scripts/backport --pr 205242

Questions ?

Please refer to the Backport tool documentation

[crespocarlos]

💚 All backports created successfully

Status	Branch	Result
✅	8.16

Note: Successful backport PRs will be merged automatically after passing CI.

Questions ?

Please refer to the Backport tool documentation