Prevent console errors when embedding Calendly in a Next.js app

Other Questions Calendly
1

I am encountering errors in the browser console while trying to embed Calendly scheduling tools into my Next.js application. I’m utilizing the react-calendly package for various methods of booking, like inline widgets, pop-up modals, and links.

The specific console error messages I’m seeing are:

  1. Failed to load resource: net::ERR_BLOCKED_BY_CLIENT
  2. [Violation] Possible permissions policy violation: payment is not permitted in this document
  3. Event error objects indicating isTrusted status

From what I’ve discovered, these messages seem to stem from third-party scripts that Calendly integrates, including analytics services, payment handlers, or security measures. Despite these warnings, the booking features operate correctly, and users can successfully set appointments. Nevertheless, these messages appear in both development and production settings.

To keep the console output tidy, particularly when presenting the app to clients or testers, I would prefer solutions to suppress these warnings or to implement a minimized version of the Calendly embeds that avoids loading excessive external scripts.

"use client";
import { InlineWidget } from "react-calendly";

export default function ContactPage() {
  return (
    <div className="p-8">
      <InlineWidget url="https://calendly.com/traezeeofor/new-meeting" />
    </div>
  );
}
2

I’ve had this exact issue with Calendly integration. ERR_BLOCKED_BY_CLIENT usually means browser extensions or ad blockers are killing Calendly’s tracking scripts. For the permissions policy error, just add this meta tag to your document head: <meta http-equiv="Permissions-Policy" content="payment=*">. I’d actually skip react-calendly and use a custom iframe instead. Load the Calendly URL directly with sandbox attributes like allow-forms allow-scripts allow-same-origin. You get way more control over what scripts run, and it cuts down on the unwanted stuff while keeping everything working.

3

Been there. Console errors from third-party embeds suck, especially when you’re demoing to clients.

Skip fighting with Calendly’s scripts - just automate the whole thing yourself. Build a custom form that grabs the booking details, then use automation to create calendar events and send confirmations.

I built this for a client portal that needed clean scheduling without external dependencies. The automation handles timezone conversion, sends confirmations, creates calendar invites, and manages rescheduling. Zero console errors and you control everything.

Trigger the workflow from your Next.js form, process the scheduling logic in the background, return a clean success page. No more third-party scripts cluttering your console or getting blocked by ad blockers.

Takes maybe an hour to set up but kills these integration headaches forever.

4

you could try using a different browser or check if an adblocker is causing those errors. the inline widget is cool, but those scripts can be tricky. also, error boundaries might help catch those issues!

5

I’ve dealt with these Calendly console errors for years. The easiest fix is just suppressing them during development.

Drop this in your root layout or _app.js:

if (process.env.NODE_ENV === 'development') {
  const originalError = console.error;
  console.error = (...args) => {
    if (args[0]?.includes?.('ERR_BLOCKED_BY_CLIENT') || 
        args[0]?.includes?.('permissions policy violation')) {
      return;
    }
    originalError.apply(console, args);
  };
}

Filters out those Calendly errors but keeps everything else.

For production demos, I use a toggle between the real widget and a screenshot placeholder. Stakeholders get distracted by console noise, so this keeps things clean.

These errors don’t actually break anything. Ad blockers kill Calendly’s analytics and payment scripts, but scheduling still works. I gave up trying to fix them and just hide them now.

6

Fix the permissions policy violation by adding this header to your next.config.js: ‘Permissions-Policy’: ‘payment=(self “https://calendly.com”)’. Those resource errors you’re seeing? That’s just content blockers - they won’t break anything. Want cleaner console output for demos? Use Calendly’s prefill parameters and their embed API directly. You can also wrap your Calendly widget in a dynamic import with ssr: false to avoid server-side rendering problems. The react-calendly package adds extra tracking scripts you don’t need. A direct embed cuts down on console warnings and still gives you all the scheduling features.