A few days ago this started appearing in my Google Apps Script Web App Consoles:
Uncaught (in promise) ReferenceError: currentURL is not defined at then.catch.e (content_script_bundle.js:13)
What might this be?
content_script_bundle.js is likely a script within a Chrome Extension. Ghostery has such a js file. Basically, it has caught an error of some kind
window.console.error("Could not run content script", e, currentURL())
Unfortunately, the line in the script that pushes the error to the console itself has a minor bug whereby
currentURL has not been defined so it squawks.
Just turn off Ghostery or whatever and the error will disappear. Although, you can just ignore it.