Fatal error: Uncaught TypeError: strtotime(): Argument #2 ($baseTimestamp) must be of type ?int, string given in /in/rHsef:3
Stack trace:
#0 /in/rHsef(3): strtotime('+7 days', '2014-01-30')
#1 {main}
thrown in /in/rHsef on line 3
Process exited with code 255.