[imgur] Handle 403 overcapacity response

[shinji257]

I believe this is a result of hitting an API limit for the IP (vs the Client ID limits). An IP limit isn't documented (from what I could find) but I do believe it was that because when checking the API from another connection reveals that it goes through fine with the same Client ID and it showed available quota when checked.

Log: [imgur][error] HttpError: '403 Unknown Error' for 'https://api.imgur.com/3/image/NttviOD'
JSON output when checked: {"data":{"error":"Imgur is temporarily over capacity. Please try again later."},"success":false,"status":403}

I don't know what the reset time frame is but I think it reset for me within the hour once I stopped hitting the Imgur API.

Added note: I think this is only for the API. When I accessed the site using a browser on the system it could access Imgur just fine and even was able to curl images still at that point. Just couldn't interact with the API.

EDIT: Before anyone asks I did try my own client id and it did the same thing without having been used on the IP previously.

[KilliK69]

the imgur plugin in Jdownloader2 shows a limit of 2000 requests.

[Sebastian-Nielsen]

@shinji257 Did you figure out why it occured and for how long you had to wait before you could access it again?

[mkyy]

shouldn't they treat this exception ?
why show this ugly error screen to users ?