Error Details

Understand the complete context of each error.

Overview

When you click an issue, you see the full error details including:

• Stack trace
• Request data
• User information
• Breadcrumbs
• Tags and metadata
• Related events

Stack Trace

Reading Stack Traces

The stack trace shows the execution path leading to the error:

TypeError: Cannot read property 'name' of undefined

app/services/UserService.php in getUser at line 45
app/controllers/UserController.php in show at line 23
vendor/laravel/framework/src/Routing/Router.php in dispatch at line 680

• Top frame - Where the error occurred
• Lower frames - The call chain
• Vendor frames - Third-party code (often collapsed)

In-App vs Vendor Code

Nadi distinguishes your code from vendor code:

• In-app (highlighted) - Your application code
• Vendor (dimmed) - Libraries and frameworks

Configure in your SDK which paths are "in-app".

Source Context

If source maps are uploaded, you'll see:

43 |   const user = await findUser(id);
44 |
45 |   return user.name;  // ← Error occurred here
46 | }
47 |

Frame Details

Click a frame to see:

• Full file path
• Function/method name
• Arguments (if available)
• Local variables (if available)

Request Data

For web requests, you'll see:

URL & Method

POST /api/users/123/update

Headers

Host: example.com
Content-Type: application/json
User-Agent: Mozilla/5.0...
X-Request-ID: abc123

Sensitive headers (Authorization, Cookie) are filtered by default.

Query Parameters

page=1
limit=20

Request Body

{
  "name": "John Doe",
  "email": "[email protected]",
  "password": "[FILTERED]"
}

Sensitive fields are automatically filtered.

User Information

If user identification is configured:

Field	Example
ID	12345
Email	[email protected]
Name	John Doe
IP	192.168.1.1

User History

See all errors for this user:

• Click the user ID
• View their error timeline
• See affected pages/features

Breadcrumbs

Breadcrumbs show what happened before the error:

10:30:15  [navigation]  User navigated to /dashboard
10:30:16  [http]        GET /api/user/profile - 200
10:30:17  [ui.click]    Clicked "Edit Profile" button
10:30:18  [http]        POST /api/user/update - 500
10:30:18  [error]       TypeError: Cannot read property 'name'

Breadcrumb Categories

Category	Description
navigation	Page/route changes
http	API requests
ui	User interactions
console	Console output
error	Previous errors

Filtering Breadcrumbs

Filter breadcrumbs by category or search by message.

Tags

Tags are key-value pairs for filtering:

environment: production
release: 1.2.3
server: web-01
browser: Chrome 120

Default Tags

Automatically captured:

• Environment
• Release/version
• Server name
• Browser (JavaScript)
• OS (JavaScript)

Custom Tags

Tags set by your SDK:

• Feature flags
• User segments
• A/B test variants

Extra Data

Additional context attached by your SDK:

{
  "order_id": 12345,
  "cart_total": 99.99,
  "items_count": 3
}

Environment Information

System context when error occurred:

Info	Example
Runtime	PHP 8.2.1
Framework	Laravel 10.0
OS	Ubuntu 22.04
Server	nginx/1.24
Memory	128MB limit

Event History

See all occurrences of this issue:

Event List

Each event shows:

• Timestamp
• User (if identified)
• Environment
• Any unique context

Event Comparison

Compare two events to see differences in:

• Request data
• User
• Environment
• Custom data

Related Issues

Issues that might be related:

• Same user affected
• Same time window
• Similar stack trace
• Same release

Actions

Copy Error

Copy formatted error for:

• Stack Overflow question
• Internal documentation
• Support ticket

Share Link

Generate a shareable link to this error:

• Direct link to issue
• Link to specific event
• Link with time range

Create External Issue

Create linked issues in:

• GitHub
• GitLab
• Jira
• Linear

Download Event Data

Export event as:

• JSON
• CSV

Session Replay

If session replay is enabled:

1. Click View Replay
2. Watch user actions before error
3. See DOM at time of error

Learn more about Session Replay →

Next Steps

• Trends - Analyze error patterns
• Issues - Manage issues