Firefox Katalon Recorder Can't Run: wait for Ajax timeout

I just added the plugin to Firefox 72.
Recording seemed to work fine. Same with editing.

But when I try to Play or “PLAY from Here” starting on a click command, it pauses then times out after 30000ms

[info] Wait for all ajax requests to be done

[error] Ajax Wait timed out after 30000ms

Each item shows up as green, but takes 30 seconds to run.

What are the possible problems here: multiple windows? multiple tabs?

setTimeout 500 doesn’t seem to count here.


on Windows 10.

Is no one using the plugin in Firefox?

Sorry no one has got in touch.

Firstly, I don’t use the plugin so treat my answers accordingly.

Did you try the same web page in Chrome? What happens?

I just tried adding the Katalon extension to Chrome 84, and it loads my test case.
However I cannot fully use the browser now. I logged into my site and after accepting the password it just sat there with the spinner running.

The dev console starts with:

DevTools failed to load SourceMap: Could not load content for chrome-extension://ljdobmomdgdljniojadhoplhkpialdid/common/ HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEME

Since this is the only extension, I have to assume that is that referenced string above.
But in the 3rd error listed Chrome also gives a URL for the website I’m trying to test having the same error with / 404.

The bottom of the errors has:
“in Startnull main.js:42”
referencing chrome-extension://ljdobmomdgdljniojadhoplhkpialdid/katalon/main.js

Does Katalon Recorder have unit and UA test suites which prove this version should be running correctly in Firefox and Chrome?

Because right now it looks like it doesn’t on… some version of Windows 10.

@ThanhTo @duyluong


Does this failure happen across all pages, or just on a certain page ?