What is causing the error message "POST https://rum-http-intake.logs.datadoghq.com/v1/input/pub9238a331d14b5f49624bb5e93b1bbd64?ddsource=browser&ddtags=sdk_version%3A3.6.12%2Cenv%3Aprod%2Cservice%3AWebflow-Dashboard%2Cversion%3Amain-7aa45cc013078e2b9def076ddf9bb0d99acbf3a5&batch_time=1687869247112 net::ERR_BLOCKED_BY_CLIENT" when trying to edit a component in Webflow that contains an embed element?
TL;DR
- The error is caused by an ad blocker or privacy extension blocking Webflow’s internal Datadog monitoring script.
- Disable or whitelist the extension in your browser for Webflow to stop the error; it does not affect your live site.
You're seeing the "ERR_BLOCKED_BY_CLIENT" error because a browser extension—most likely an ad blocker or privacy extension—is preventing a required third-party request used by Webflow for performance monitoring.
1. Understand the Error Message
- The error is being thrown for a POST request to
rum-http-intake.logs.datadoghq.com, which is Datadog's RUM (Real User Monitoring) endpoint. - The message
ERR_BLOCKED_BY_CLIENTtypically comes from ad-blockers like uBlock Origin, Adblock Plus, or Brave Shield. - This third-party script is used by Webflow internally within the Designer or Dashboard to track performance and errors, but it's getting blocked.
2. Identify the Extension Causing the Block
- Check your browser for active extensions such as:
- AdBlock / Adblock Plus
- uBlock Origin
- Privacy Badger
- Brave Browser’s built-in Shield
- Temporarily disable these extensions and reload Webflow. If the error disappears, the extension is the cause.
3. Whitelist Datadog or Webflow
- For most ad-blockers, you can:
- Click the extension icon in your browser toolbar.
- Select “Don’t run on this site” or “Whitelist webflow.com”.
- This allows performance scripts like Datadog to load properly without disabling the extension globally.
4. Confirm It's Harmless for Your Site
- This error is only affecting the Webflow Designer environment, not your published site or users.
- It does not break any visual or functional aspects of your embedded components or site structure.
Summary
This error is caused by an ad blocker or privacy extension blocking Webflow’s internal use of Datadog. It’s safe to ignore unless it's interfering with editing. Disable or whitelist the extension in Webflow to resolve it.