1. Check Console for Error Details
Open the Developer Console in your browser (Right-click → Inspect → Console tab).
You will find an error message logged along with the Rule ID that caused the issue.
This information is essential for debugging or sharing with the support team if needed.
2. Common Errors and Resolutions
a. Regex Size Limit Exceeded
If the error message indicates that the regex exceeds the supported size limit, please refer to this issue for known limitations and potential workarounds:
Regex Size Limit Issue #1690
b. Invalid Regex / Unsupported Lookaheads
If the error message mentions "Invalid regex" or unsupported syntax such as lookaheads, it means the pattern is not compatible with the regex engine we use.
Requestly uses RE2-compatible regular expressions, as required by Chrome's Manifest V3 security model.
This is a technical limitation imposed by Chrome, and not something we can bypass.
For reference on RE2-compatible syntax, you can visit:
RE2 Syntax Documentation
3. Still Facing Issues?
If your error does not fall under the above categories, or you're unsure how to proceed, please:
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Note the error message from the console.
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Contact our support team or file an issue with details on GitHub.