I have a weird problem with graphs that are on the dashboard show correct data but if I click on one the date start is 1969-12-30 but if I choose the device from the device menus and go to the same graph the start date is correct for 24 hours. I have check the date and time on the server and it is also correct I recreated the dashboard graphs from scratch and it still does it. I apologize if this has been asked before but I could not find an answer. 
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