Unable to download any chart history data or use strategy tester


Hi guys, my charts seem to be unable to download any historical data suddenly. The chart progresses 1 candle at a time, and would like to ask if anyone has a resolution for this? Here's a screenshot. Don't seem to be able to download tick data from my broker as well.

My strategy tester does not work as well. It comes up with the error as seen below.

Please help! not sure what occured all of a sudden but i cant trade at all now.