# Troubleshooting

## Common Issues

**Anonymizer not working:**

* Ensure the anonymizer is registered with `opik.hooks.add_anonymizer()`
* Check that your patterns are correct using a regex tester
* Verify that `opik.flush_tracker()` is called if needed

**Performance issues:**

* Reduce the complexity of regex patterns
* Limit the number of registered anonymizers
* Consider using more specific patterns to reduce processing overhead

**False positives:**

* Make your regex patterns more specific
* Test thoroughly with representative data
* Consider using negative lookbehind/lookahead assertions