tools-only PostHog Common Errors
Overview
Quick reference for the top 10 most common PostHog errors and their solutions.
Prerequisites
- PostHog SDK installed
- API credentials configured
- Access to error logs
Instructions
Step 1: Identify the Error
Check error message and code in your logs or console.
Step 2: Find Matching Error Below
Match your error to one of the documented cases.
Step 3: Apply Solution
Follow the solution steps for your specific error.
Output
- Identified error cause
- Applied fix
- Verified resolution
Error Handling
Authentication Failed
Error Message:
Authentication error: Invalid API key
Cause: API key is missing, expired, or invalid.
Solution:
# Verify API key is set
echo $POSTHOG_API_KEY
Rate Limit Exceeded
Error Message:
Rate limit exceeded. Please retry after X seconds.
Cause: Too many requests in a short period.
Solution:
Implement exponential backoff. See posthog-rate-limits skill.
Network Timeout
Error Message:
Request timeout after 30000ms
Cause: Network connectivity or server latency issues.
Solution:
// Increase timeout
const client = new Client({ timeout: 60000 });
Examples
Quick Diagnostic Commands
# Check PostHog status
curl -s https://status.posthog.com
# Verify API connectivity
curl -I https://api.posthog.com
# Check local configuration
env | grep POSTHOG
Escalation Path
- Collect evidence with
posthog-debug-bundle - Check PostHog status page
- Contact support with request ID
Resources
Next Steps
For comprehensive debugging, see posthog-debug-bundle.