How do I fix or troubleshoot a 1101 Error?

Common steps include reloading the page in your browser, checking for typos in the URL, verifying server status, clearing browser cache or cookies, and contacting the website owner or server administrator if the error persists.

1101 Error

A 1101 Rendering error is a Cloudflare-specific error code for:

“There's a Javascript issue.”

A Cloudflare Error 1101 occurs when a Cloudflare Worker script encounters an unhandled JavaScript runtime exception while attempting to render or proxy a webpage.

Common causes

A Cloudflare Worker throws a runtime JavaScript exception.

Resolution

The Cloudflare administrator will need to provide appropriate issues details to Cloudflare Support.

Source: https://support.cloudflare.com/hc/en-us/articles/360029779472-Troubleshooting-Cloudflare-1XXX-errors#error1101