Error on Event Handler

I am currently experiencing an issue with an eventhandler that I have created. Last week I was able to edit the Event Handler in Javascript directly in my browser, but when I went to do the same today, I was met with the attached error.

My app id is - DD9FC30D-3A6F-AB4C-FF9C-24DC92E73100

Please let me know what I can do to fix this.

Thanks,
Will

This is a draft handler and seems like you have removed a file for that on the Coding screen (JS Code)

Would I have had to remove it? No changes were made between Friday and today.

Disregard that response. We deployed a new version of our cloud code over the weekend that did not include the eventHandler which I think led to it being overwritten. Is there anyway to recover the draft event handler that I had created?

Recreated what I had written last week. Can close this topic.