This is probably because that error message page is still stored somewhere in you disk cache.
Try this:
Click on the community link and make it open in a new window. On Windows systems you usually use a right click and select "Open in new window" from the context menu. Could be the same on Mac OS. If you see that error message again, try to click the "Reload/Refresh" symbol of your browser. Try to click it while pressing the "ALT", "CTRL" or "SHIFT" key. I don't know the exact combination, but usually a click on Refresh while holding down one of these special keys forces your browser reload the current page and ignore/bypass your temporary internet storage (cache).
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