When I have developer tools open and open the edit flashcard pop-up (either in the Word list or during Classic Flashcards practice), I get two error lines like this:
rollbar.min.js:2
GET https://readlang.com/api/smartDictionary?query=URL-ENCODED-TARGET-WORD&context=URL-ENCODED-CONTEXT&language=fi&showInEnglish=true&cacheOnly=true&_=1720256604977 404 (Not Found)
In my Settings, I have Wiktionary set up as the dictionary of choice. No dictionary shows up on the Edit Card view, but I do get to see Wiktionary look-ups in the Reading interface.
This is expected. These are requests to see if you already have a stored explanation for a word. It’s annoying that there doesn’t seem to be a clean way to prevent these from turning up as errors in the JS console in Chrome (and maybe other browsers). This seems to be a common issue: javascript - Suppress Chrome 'Failed to load resource' messages in console - Stack Overflow
(There are hacky ways to fix it, e.g. make the request return a 200 response code (OK) response with info in the body saying that the item wasn’t found, or running some code in an error handler to remove these items from the console. But I’m not in love with any of these approaches.)