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Description
🔥 Error Report from Sentry
Issue ID: TESTHTML-2G
First Seen: January 15, 2025, 3:42 PM UTC
Last Seen: January 15, 2025, 3:43 PM UTC
Frequency: 3 events in 1 minute
Users Affected: 2
📋 Error Details
Error Type: TypeError
Error Message: Cannot read properties of null (reading 'name')
Stack Trace:
TypeError: Cannot read properties of null (reading 'name')
at about.html:92:37
at about.html:90:9🌐 Environment Information
| Field | Value |
|---|---|
| Environment | Production |
| URL | https://casjam.github.io/testhtml/about.html |
| Browser | Chrome 131.0.0.0 |
| OS | macOS 14.5.0 |
| User Agent | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 |
| Release | e89e397fb2c8a4f9d12e3f45a6b7c8d9e0f1a2b3 |
🔍 Code Context
File: about.html (Line 94-96)
// Bug: Trying to access undefined property
const userProfile = null;
const displayName = userProfile.name.toUpperCase(); // This will throw TypeError📊 Event Details
Event #1:
- Timestamp: 2025-01-15T15:42:31.123Z
- User ID: anonymous_user_1
- Session ID: sess_8f7e6d5c4b3a2918
- IP Address: 192.168.1.105
Event #2:
- Timestamp: 2025-01-15T15:42:45.456Z
- User ID: anonymous_user_2
- Session ID: sess_7d6c5b4a3928e817
- IP Address: 10.0.0.24
Event #3:
- Timestamp: 2025-01-15T15:43:12.789Z
- User ID: anonymous_user_1
- Session ID: sess_8f7e6d5c4b3a2918
- IP Address: 192.168.1.105
🏷️ Tags
level:errorenvironment:productionbrowser:chromeplatform:javascripthandled:falsemechanism:onerror
💡 Suggested Fix
The error occurs because the code attempts to access the name property on a null object. Consider adding null checking:
// Suggested fix:
const userProfile = null;
const displayName = userProfile?.name?.toUpperCase() || 'Guest User';🚀 Impact Assessment
- Severity: High
- Error Rate: 100% of page loads affected
- Performance Impact: JavaScript execution halted
- User Experience: About page functionality compromised
📝 Additional Context
This error was introduced in commit e89e397 with the message "Add user profile display functionality". The error prevents the about page from completing its JavaScript initialization sequence.
Potential Root Cause: Missing null validation when accessing user profile data.
This issue was automatically created by Sentry error monitoring. View in Sentry Dashboard →
Priority: 🔴 Critical - Affects core page functionality
Assignment: Needs immediate attention from development team