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question asked: 24 May '17, 11:19
question was seen: 1,624 times
last updated: 28 May '17, 15:20
What do you see in firebug's network tab? Does the api request return a proper HTTP/200 answer?
It returned 304 even when it get png file on overpass server was show 304.However, it works smoothly on my chrome browser.