Fatal error: Uncaught TypeError: strtotime(): Argument #2 ($baseTimestamp) must be of type ?int, string given in /in/2f0tA:3
Stack trace:
#0 /in/2f0tA(3): strtotime('-24 hours', '2013-12-13 00:0...')
#1 {main}
thrown in /in/2f0tA on line 3
Process exited with code 255.